-/***************************************************************************\r
- * Copyright (C) 2006 by Magnus Lundin *\r
- * lundin@mlu.mine.nu *\r
- * *\r
- * This program is free software; you can redistribute it and/or modify *\r
- * it under the terms of the GNU General Public License as published by *\r
- * the Free Software Foundation; either version 2 of the License, or *\r
- * (at your option) any later version. *\r
- * *\r
- * This program is distributed in the hope that it will be useful, *\r
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *\r
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *\r
- * GNU General Public License for more details. *\r
- * *\r
- * You should have received a copy of the GNU General Public License *\r
- * along with this program; if not, write to the *\r
- * Free Software Foundation, Inc., *\r
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *\r
- ***************************************************************************/\r
-\r
-/***************************************************************************\r
-There are some things to notice\r
-\r
-* AT91SAM7S64 is tested\r
-* All AT91SAM7Sxx and AT91SAM7Xxx should work but is not tested\r
-* All parameters are identified from onchip configuartion registers \r
-*\r
-* The flash controller handles erases automatically on a page (128/265 byte) basis\r
-* Only an EraseAll command is supported by the controller\r
-* Partial erases can be implemented in software by writing one 0xFFFFFFFF word to \r
-* some location in every page in the region to be erased\r
-* \r
-* Lock regions (sectors) are 32 or 64 pages\r
-*\r
- ***************************************************************************/\r
-#ifdef HAVE_CONFIG_H\r
-#include "config.h"\r
-#endif\r
-\r
-#include "replacements.h"\r
-\r
-#include "at91sam7.h"\r
-\r
-#include "flash.h"\r
-#include "target.h"\r
-#include "log.h"\r
-#include "binarybuffer.h"\r
-#include "types.h"\r
-\r
-#include <stdlib.h>\r
-#include <string.h>\r
-#include <unistd.h>\r
-\r
-int at91sam7_register_commands(struct command_context_s *cmd_ctx);\r
-int at91sam7_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank);\r
-int at91sam7_erase(struct flash_bank_s *bank, int first, int last);\r
-int at91sam7_protect(struct flash_bank_s *bank, int set, int first, int last);\r
-int at91sam7_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count);\r
-int at91sam7_probe(struct flash_bank_s *bank);\r
-int at91sam7_auto_probe(struct flash_bank_s *bank);\r
-int at91sam7_erase_check(struct flash_bank_s *bank);\r
-int at91sam7_protect_check(struct flash_bank_s *bank);\r
-int at91sam7_info(struct flash_bank_s *bank, char *buf, int buf_size);\r
-\r
-u32 at91sam7_get_flash_status(flash_bank_t *bank, u8 flashplane);\r
-void at91sam7_set_flash_mode(flash_bank_t *bank, u8 flashplane, int mode);\r
-u32 at91sam7_wait_status_busy(flash_bank_t *bank, u8 flashplane, u32 waitbits, int timeout);\r
-int at91sam7_flash_command(struct flash_bank_s *bank, u8 flashplane, u8 cmd, u16 pagen); \r
-int at91sam7_handle_gpnvm_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);\r
-\r
-flash_driver_t at91sam7_flash =\r
-{\r
- .name = "at91sam7",\r
- .register_commands = at91sam7_register_commands,\r
- .flash_bank_command = at91sam7_flash_bank_command,\r
- .erase = at91sam7_erase,\r
- .protect = at91sam7_protect,\r
- .write = at91sam7_write,\r
- .probe = at91sam7_probe,\r
- .auto_probe = at91sam7_auto_probe,\r
- .erase_check = at91sam7_erase_check,\r
- .protect_check = at91sam7_protect_check,\r
- .info = at91sam7_info\r
-};\r
-\r
-u32 MC_FMR[4] = { 0xFFFFFF60, 0xFFFFFF70, 0xFFFFFF80, 0xFFFFFF90 };\r
-u32 MC_FCR[4] = { 0xFFFFFF64, 0xFFFFFF74, 0xFFFFFF84, 0xFFFFFF94 };\r
-u32 MC_FSR[4] = { 0xFFFFFF68, 0xFFFFFF78, 0xFFFFFF88, 0xFFFFFF98 };\r
-\r
-char * EPROC[8]= {"Unknown","ARM946-E","ARM7TDMI","Unknown","ARM920T","ARM926EJ-S","Unknown","Unknown"};\r
-long NVPSIZ[16] = {\r
- 0,\r
- 0x2000, /* 8K */\r
- 0x4000, /* 16K */ \r
- 0x8000, /* 32K */\r
- -1,\r
- 0x10000, /* 64K */\r
- -1,\r
- 0x20000, /* 128K */\r
- -1,\r
- 0x40000, /* 256K */\r
- 0x80000, /* 512K */\r
- -1,\r
- 0x100000, /* 1024K */\r
- -1,\r
- 0x200000, /* 2048K */\r
- -1\r
-};\r
-\r
-long SRAMSIZ[16] = {\r
- -1,\r
- 0x0400, /* 1K */\r
- 0x0800, /* 2K */ \r
- -1, \r
- 0x1c000, /* 112K */\r
- 0x1000, /* 4K */\r
- 0x14000, /* 80K */\r
- 0x28000, /* 160K */\r
- 0x2000, /* 8K */\r
- 0x4000, /* 16K */\r
- 0x8000, /* 32K */\r
- 0x10000, /* 64K */\r
- 0x20000, /* 128K */\r
- 0x40000, /* 256K */\r
- 0x18000, /* 96K */\r
- 0x80000, /* 512K */\r
-};\r
-\r
-int at91sam7_register_commands(struct command_context_s *cmd_ctx)\r
-{\r
- command_t *at91sam7_cmd = register_command(cmd_ctx, NULL, "at91sam7", NULL, COMMAND_ANY, NULL);\r
- register_command(cmd_ctx, at91sam7_cmd, "gpnvm", at91sam7_handle_gpnvm_command, COMMAND_EXEC,\r
- "at91sam7 gpnvm <num> <bit> set|clear, set or clear at91sam7 gpnvm bit");\r
-\r
- return ERROR_OK;\r
-}\r
-\r
-u32 at91sam7_get_flash_status(flash_bank_t *bank, u8 flashplane)\r
-{\r
- target_t *target = bank->target;\r
- u32 fsr;\r
- \r
- target_read_u32(target, MC_FSR[flashplane], &fsr);\r
- \r
- return fsr;\r
-}\r
-\r
-/** Read clock configuration and set at91sam7_info->usec_clocks*/ \r
-void at91sam7_read_clock_info(flash_bank_t *bank)\r
-{\r
- at91sam7_flash_bank_t *at91sam7_info = bank->driver_priv;\r
- target_t *target = bank->target;\r
- u32 mckr, mcfr, pllr;\r
- unsigned long tmp = 0, mainfreq;\r
- int flashplane;\r
-\r
- /* Read main clock freqency register */\r
- target_read_u32(target, CKGR_MCFR, &mcfr);\r
- /* Read master clock register */\r
- target_read_u32(target, PMC_MCKR, &mckr);\r
- /* Read Clock Generator PLL Register */\r
- target_read_u32(target, CKGR_PLLR, &pllr);\r
-\r
- at91sam7_info->mck_valid = 0;\r
- switch (mckr & PMC_MCKR_CSS) \r
- {\r
- case 0: /* Slow Clock */\r
- at91sam7_info->mck_valid = 1;\r
- mainfreq = RC_FREQ / 16ul * (mcfr & 0xffff);\r
- tmp = mainfreq;\r
- break;\r
- case 1: /* Main Clock */\r
- if (mcfr & CKGR_MCFR_MAINRDY) \r
- {\r
- at91sam7_info->mck_valid = 1;\r
- mainfreq = RC_FREQ / 16ul * (mcfr & 0xffff);\r
- tmp = mainfreq;\r
- }\r
- break;\r
-\r
- case 2: /* Reserved */\r
- break;\r
- case 3: /* PLL Clock */\r
- if (mcfr & CKGR_MCFR_MAINRDY) \r
- {\r
- target_read_u32(target, CKGR_PLLR, &pllr);\r
- if (!(pllr & CKGR_PLLR_DIV))\r
- break; /* 0 Hz */\r
- at91sam7_info->mck_valid = 1;\r
- mainfreq = RC_FREQ / 16ul * (mcfr & 0xffff);\r
- /* Integer arithmetic should have sufficient precision\r
- as long as PLL is properly configured. */\r
- tmp = mainfreq / (pllr & CKGR_PLLR_DIV) *\r
- (((pllr & CKGR_PLLR_MUL) >> 16) + 1);\r
- }\r
- break;\r
- }\r
- \r
- /* Prescaler adjust */\r
- if (((mckr & PMC_MCKR_PRES) >> 2) == 7)\r
- at91sam7_info->mck_valid = 0;\r
- else\r
- at91sam7_info->mck_freq = tmp >> ((mckr & PMC_MCKR_PRES) >> 2);\r
-\r
- /* Forget old flash timing */\r
- for (flashplane = 0; flashplane<at91sam7_info->num_planes; flashplane++)\r
- {\r
- at91sam7_set_flash_mode(bank, flashplane, FMR_TIMING_NONE);\r
- }\r
-}\r
-\r
-/* Setup the timimg registers for nvbits or normal flash */\r
-void at91sam7_set_flash_mode(flash_bank_t *bank, u8 flashplane, int mode)\r
-{\r
- u32 fmr, fmcn = 0, fws = 0;\r
- at91sam7_flash_bank_t *at91sam7_info = bank->driver_priv;\r
- target_t *target = bank->target;\r
- \r
- if (mode && (mode != at91sam7_info->flashmode[flashplane]))\r
- {\r
- /* Always round up (ceil) */\r
- if (mode==FMR_TIMING_NVBITS)\r
- {\r
- if (at91sam7_info->cidr_arch == 0x60)\r
- {\r
- /* AT91SAM7A3 uses master clocks in 100 ns */\r
- fmcn = (at91sam7_info->mck_freq/10000000ul)+1;\r
- }\r
- else\r
- {\r
- /* master clocks in 1uS for ARCH 0x7 types */\r
- fmcn = (at91sam7_info->mck_freq/1000000ul)+1;\r
- }\r
- }\r
- else if (mode==FMR_TIMING_FLASH)\r
- /* main clocks in 1.5uS */\r
- fmcn = (at91sam7_info->mck_freq/666666ul)+1;\r
-\r
- /* Only allow fmcn=0 if clock period is > 30 us = 33kHz. */\r
- if (at91sam7_info->mck_freq <= 33333ul)\r
- fmcn = 0;\r
- /* Only allow fws=0 if clock frequency is < 30 MHz. */\r
- if (at91sam7_info->mck_freq > 30000000ul)\r
- fws = 1;\r
-\r
- DEBUG("fmcn[%i]: %i", flashplane, fmcn); \r
- fmr = fmcn << 16 | fws << 8;\r
- target_write_u32(target, MC_FMR[flashplane], fmr);\r
- }\r
- \r
- at91sam7_info->flashmode[flashplane] = mode; \r
-}\r
-\r
-u32 at91sam7_wait_status_busy(flash_bank_t *bank, u8 flashplane, u32 waitbits, int timeout)\r
-{\r
- u32 status;\r
- \r
- while ((!((status = at91sam7_get_flash_status(bank,flashplane)) & waitbits)) && (timeout-- > 0))\r
- {\r
- DEBUG("status[%i]: 0x%x", flashplane, status);\r
- usleep(1000);\r
- }\r
- \r
- DEBUG("status[%i]: 0x%x", flashplane, status);\r
-\r
- if (status & 0x0C)\r
- {\r
- ERROR("status register: 0x%x", status);\r
- if (status & 0x4)\r
- ERROR("Lock Error Bit Detected, Operation Abort");\r
- if (status & 0x8)\r
- ERROR("Invalid command and/or bad keyword, Operation Abort");\r
- if (status & 0x10)\r
- ERROR("Security Bit Set, Operation Abort");\r
- }\r
- \r
- return status;\r
-}\r
-\r
-\r
-/* Send one command to the AT91SAM flash controller */\r
-int at91sam7_flash_command(struct flash_bank_s *bank, u8 flashplane, u8 cmd, u16 pagen) \r
-{\r
- u32 fcr;\r
- at91sam7_flash_bank_t *at91sam7_info = bank->driver_priv;\r
- target_t *target = bank->target;\r
-\r
- fcr = (0x5A<<24) | ((pagen&0x3FF)<<8) | cmd; \r
- target_write_u32(target, MC_FCR[flashplane], fcr);\r
- DEBUG("Flash command: 0x%x, flashplane: %i, pagenumber:%u", fcr, flashplane, pagen);\r
-\r
- if ((at91sam7_info->cidr_arch == 0x60)&&((cmd==SLB)|(cmd==CLB)))\r
- {\r
- /* Lock bit manipulation on AT91SAM7A3 waits for FC_FSR bit 1, EOL */\r
- if (at91sam7_wait_status_busy(bank, flashplane, MC_FSR_EOL, 10)&0x0C) \r
- {\r
- return ERROR_FLASH_OPERATION_FAILED;\r
- }\r
- return ERROR_OK;\r
- }\r
-\r
- if (at91sam7_wait_status_busy(bank, flashplane, MC_FSR_FRDY, 10)&0x0C) \r
- {\r
- return ERROR_FLASH_OPERATION_FAILED;\r
- }\r
- return ERROR_OK;\r
-}\r
-\r
-/* Read device id register, main clock frequency register and fill in driver info structure */\r
-int at91sam7_read_part_info(struct flash_bank_s *bank)\r
-{\r
- at91sam7_flash_bank_t *at91sam7_info = bank->driver_priv;\r
- target_t *target = bank->target;\r
- u32 cidr, status;\r
- int sectornum;\r
- \r
- if (bank->target->state != TARGET_HALTED)\r
- {\r
- return ERROR_TARGET_NOT_HALTED;\r
- }\r
- \r
- /* Read and parse chip identification register */\r
- target_read_u32(target, DBGU_CIDR, &cidr);\r
- \r
- if (cidr == 0)\r
- {\r
- WARNING("Cannot identify target as an AT91SAM");\r
- return ERROR_FLASH_OPERATION_FAILED;\r
- }\r
- \r
- at91sam7_info->cidr = cidr;\r
- at91sam7_info->cidr_ext = (cidr>>31)&0x0001;\r
- at91sam7_info->cidr_nvptyp = (cidr>>28)&0x0007;\r
- at91sam7_info->cidr_arch = (cidr>>20)&0x00FF;\r
- at91sam7_info->cidr_sramsiz = (cidr>>16)&0x000F;\r
- at91sam7_info->cidr_nvpsiz2 = (cidr>>12)&0x000F;\r
- at91sam7_info->cidr_nvpsiz = (cidr>>8)&0x000F;\r
- at91sam7_info->cidr_eproc = (cidr>>5)&0x0007;\r
- at91sam7_info->cidr_version = cidr&0x001F;\r
- bank->size = NVPSIZ[at91sam7_info->cidr_nvpsiz];\r
- at91sam7_info->target_name = "Unknown";\r
-\r
- /* Support just for bulk erase of a single flash plane, whole device if flash size <= 256k */\r
- if (NVPSIZ[at91sam7_info->cidr_nvpsiz]<0x80000) /* Flash size less than 512K, one flash plane */\r
- {\r
- bank->num_sectors = 1;\r
- bank->sectors = malloc(sizeof(flash_sector_t));\r
- bank->sectors[0].offset = 0;\r
- bank->sectors[0].size = bank->size;\r
- bank->sectors[0].is_erased = -1;\r
- bank->sectors[0].is_protected = -1;\r
- }\r
- else /* Flash size 512K or larger, several flash planes */\r
- {\r
- bank->num_sectors = NVPSIZ[at91sam7_info->cidr_nvpsiz]/0x40000;\r
- bank->sectors = malloc(bank->num_sectors*sizeof(flash_sector_t));\r
- for (sectornum=0; sectornum<bank->num_sectors; sectornum++)\r
- {\r
- bank->sectors[sectornum].offset = sectornum*0x40000;\r
- bank->sectors[sectornum].size = 0x40000;\r
- bank->sectors[sectornum].is_erased = -1;\r
- bank->sectors[sectornum].is_protected = -1;\r
- }\r
- }\r
- \r
- \r
-\r
- DEBUG("nvptyp: 0x%3.3x, arch: 0x%4.4x", at91sam7_info->cidr_nvptyp, at91sam7_info->cidr_arch );\r
-\r
- /* Read main and master clock freqency register */\r
- at91sam7_read_clock_info(bank);\r
- \r
- at91sam7_info->num_planes = 1;\r
- status = at91sam7_get_flash_status(bank, 0);\r
- at91sam7_info->securitybit = (status>>4)&0x01;\r
- at91sam7_protect_check(bank); /* TODO Check the protect check */\r
- \r
- if (at91sam7_info->cidr_arch == 0x70 )\r
- {\r
- at91sam7_info->num_nvmbits = 2;\r
- at91sam7_info->nvmbits = (status>>8)&0x03;\r
- bank->base = 0x100000;\r
- bank->bus_width = 4;\r
- if (bank->size==0x80000) /* AT91SAM7S512 */\r
- {\r
- at91sam7_info->target_name = "AT91SAM7S512";\r
- at91sam7_info->num_planes = 2;\r
- if (at91sam7_info->num_planes != bank->num_sectors)\r
- WARNING("Internal error: Number of flash planes and erase sectors does not match, please report");;\r
- at91sam7_info->num_lockbits = 2*16;\r
- at91sam7_info->pagesize = 256;\r
- at91sam7_info->pages_in_lockregion = 64;\r
- at91sam7_info->num_pages = 2*16*64;\r
- }\r
- if (bank->size==0x40000) /* AT91SAM7S256 */\r
- {\r
- at91sam7_info->target_name = "AT91SAM7S256";\r
- at91sam7_info->num_lockbits = 16;\r
- at91sam7_info->pagesize = 256;\r
- at91sam7_info->pages_in_lockregion = 64;\r
- at91sam7_info->num_pages = 16*64;\r
- }\r
- if (bank->size==0x20000) /* AT91SAM7S128 */\r
- {\r
- at91sam7_info->target_name = "AT91SAM7S128";\r
- at91sam7_info->num_lockbits = 8;\r
- at91sam7_info->pagesize = 256;\r
- at91sam7_info->pages_in_lockregion = 64;\r
- at91sam7_info->num_pages = 8*64;\r
- }\r
- if (bank->size==0x10000) /* AT91SAM7S64 */\r
- {\r
- at91sam7_info->target_name = "AT91SAM7S64";\r
- at91sam7_info->num_lockbits = 16;\r
- at91sam7_info->pagesize = 128;\r
- at91sam7_info->pages_in_lockregion = 32;\r
- at91sam7_info->num_pages = 16*32;\r
- }\r
- if (bank->size==0x08000) /* AT91SAM7S321/32 */\r
- {\r
- at91sam7_info->target_name = "AT91SAM7S321/32";\r
- at91sam7_info->num_lockbits = 8;\r
- at91sam7_info->pagesize = 128;\r
- at91sam7_info->pages_in_lockregion = 32;\r
- at91sam7_info->num_pages = 8*32;\r
- }\r
- \r
- return ERROR_OK;\r
- }\r
-\r
- if (at91sam7_info->cidr_arch == 0x71 )\r
- {\r
- at91sam7_info->num_nvmbits = 3;\r
- at91sam7_info->nvmbits = (status>>8)&0x07;\r
- bank->base = 0x100000;\r
- bank->bus_width = 4;\r
- if (bank->size==0x80000) /* AT91SAM7XC512 */\r
- {\r
- at91sam7_info->target_name = "AT91SAM7XC512";\r
- at91sam7_info->num_planes = 2;\r
- if (at91sam7_info->num_planes != bank->num_sectors)\r
- WARNING("Internal error: Number of flash planes and erase sectors does not match, please report");;\r
- at91sam7_info->num_lockbits = 2*16;\r
- at91sam7_info->pagesize = 256;\r
- at91sam7_info->pages_in_lockregion = 64;\r
- at91sam7_info->num_pages = 2*16*64;\r
- }\r
- if (bank->size==0x40000) /* AT91SAM7XC256 */\r
- {\r
- at91sam7_info->target_name = "AT91SAM7XC256";\r
- at91sam7_info->num_lockbits = 16;\r
- at91sam7_info->pagesize = 256;\r
- at91sam7_info->pages_in_lockregion = 64;\r
- at91sam7_info->num_pages = 16*64;\r
- }\r
- if (bank->size==0x20000) /* AT91SAM7XC128 */\r
- {\r
- at91sam7_info->target_name = "AT91SAM7XC128";\r
- at91sam7_info->num_lockbits = 8;\r
- at91sam7_info->pagesize = 256;\r
- at91sam7_info->pages_in_lockregion = 64;\r
- at91sam7_info->num_pages = 8*64;\r
- }\r
- \r
- return ERROR_OK;\r
- }\r
- \r
- if (at91sam7_info->cidr_arch == 0x72 )\r
- {\r
- at91sam7_info->num_nvmbits = 3;\r
- at91sam7_info->nvmbits = (status>>8)&0x07;\r
- bank->base = 0x100000;\r
- bank->bus_width = 4;\r
- if (bank->size==0x80000) /* AT91SAM7SE512 */\r
- {\r
- at91sam7_info->target_name = "AT91SAM7SE512";\r
- at91sam7_info->num_planes = 2;\r
- if (at91sam7_info->num_planes != bank->num_sectors)\r
- WARNING("Internal error: Number of flash planes and erase sectors does not match, please report");;\r
- at91sam7_info->num_lockbits = 32;\r
- at91sam7_info->pagesize = 256;\r
- at91sam7_info->pages_in_lockregion = 64;\r
- at91sam7_info->num_pages = 32*64;\r
- }\r
- if (bank->size==0x40000)\r
- {\r
- at91sam7_info->target_name = "AT91SAM7SE256";\r
- at91sam7_info->num_lockbits = 16;\r
- at91sam7_info->pagesize = 256;\r
- at91sam7_info->pages_in_lockregion = 64;\r
- at91sam7_info->num_pages = 16*64;\r
- }\r
- if (bank->size==0x08000)\r
- {\r
- at91sam7_info->target_name = "AT91SAM7SE32";\r
- at91sam7_info->num_lockbits = 8;\r
- at91sam7_info->pagesize = 128;\r
- at91sam7_info->pages_in_lockregion = 32;\r
- at91sam7_info->num_pages = 8*32;\r
- }\r
- \r
- return ERROR_OK;\r
- }\r
- \r
- if (at91sam7_info->cidr_arch == 0x75 )\r
- {\r
- at91sam7_info->num_nvmbits = 3;\r
- at91sam7_info->nvmbits = (status>>8)&0x07;\r
- bank->base = 0x100000;\r
- bank->bus_width = 4;\r
- if (bank->size==0x80000) /* AT91SAM7X512 */\r
- {\r
- at91sam7_info->target_name = "AT91SAM7X512";\r
- at91sam7_info->num_planes = 2;\r
- if (at91sam7_info->num_planes != bank->num_sectors)\r
- WARNING("Internal error: Number of flash planes and erase sectors does not match, please report");;\r
- at91sam7_info->num_lockbits = 32;\r
- at91sam7_info->pagesize = 256;\r
- at91sam7_info->pages_in_lockregion = 64;\r
- at91sam7_info->num_pages = 2*16*64;\r
- DEBUG("Support for AT91SAM7X512 is experimental in this version!");\r
- }\r
- if (bank->size==0x40000) /* AT91SAM7X256 */\r
- {\r
- at91sam7_info->target_name = "AT91SAM7X256";\r
- at91sam7_info->num_lockbits = 16;\r
- at91sam7_info->pagesize = 256;\r
- at91sam7_info->pages_in_lockregion = 64;\r
- at91sam7_info->num_pages = 16*64;\r
- }\r
- if (bank->size==0x20000) /* AT91SAM7X128 */\r
- {\r
- at91sam7_info->target_name = "AT91SAM7X128";\r
- at91sam7_info->num_lockbits = 8;\r
- at91sam7_info->pagesize = 256;\r
- at91sam7_info->pages_in_lockregion = 64;\r
- at91sam7_info->num_pages = 8*64;\r
- }\r
- \r
- return ERROR_OK;\r
- }\r
- \r
- if (at91sam7_info->cidr_arch == 0x60 )\r
- {\r
- at91sam7_info->num_nvmbits = 3;\r
- at91sam7_info->nvmbits = (status>>8)&0x07;\r
- bank->base = 0x100000;\r
- bank->bus_width = 4;\r
- \r
- if (bank->size == 0x40000) /* AT91SAM7A3 */\r
- {\r
- at91sam7_info->target_name = "AT91SAM7A3";\r
- at91sam7_info->num_lockbits = 16;\r
- at91sam7_info->pagesize = 256;\r
- at91sam7_info->pages_in_lockregion = 16;\r
- at91sam7_info->num_pages = 16*64;\r
- }\r
- return ERROR_OK;\r
- }\r
- \r
- WARNING("at91sam7 flash only tested for AT91SAM7Sxx series");\r
- \r
- return ERROR_OK;\r
-}\r
-\r
-int at91sam7_erase_check(struct flash_bank_s *bank)\r
-{\r
- at91sam7_flash_bank_t *at91sam7_info = bank->driver_priv;\r
- \r
- if (!at91sam7_info->working_area_size)\r
- {\r
- }\r
- else\r
- { \r
- }\r
- \r
- return ERROR_OK;\r
-}\r
-\r
-int at91sam7_protect_check(struct flash_bank_s *bank)\r
-{\r
- u32 status;\r
- int flashplane;\r
- \r
- at91sam7_flash_bank_t *at91sam7_info = bank->driver_priv;\r
-\r
- if (at91sam7_info->cidr == 0)\r
- {\r
- at91sam7_read_part_info(bank);\r
- }\r
-\r
- if (at91sam7_info->cidr == 0)\r
- {\r
- WARNING("Cannot identify target as an AT91SAM");\r
- return ERROR_FLASH_OPERATION_FAILED;\r
- }\r
-\r
- for (flashplane=0;flashplane<at91sam7_info->num_planes;flashplane++)\r
- {\r
- status = at91sam7_get_flash_status(bank, flashplane);\r
- at91sam7_info->lockbits[flashplane] = (status >> 16);\r
- }\r
- \r
- return ERROR_OK;\r
-}\r
-\r
-/* flash_bank at91sam7 0 0 0 0 <target#>\r
- */\r
-int at91sam7_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank)\r
-{\r
- at91sam7_flash_bank_t *at91sam7_info;\r
- int i;\r
- \r
- if (argc < 6)\r
- {\r
- WARNING("incomplete flash_bank at91sam7 configuration");\r
- return ERROR_FLASH_BANK_INVALID;\r
- }\r
- \r
- at91sam7_info = malloc(sizeof(at91sam7_flash_bank_t));\r
- bank->driver_priv = at91sam7_info;\r
- at91sam7_info->probed = 0;\r
- \r
- /* part wasn't probed for info yet */\r
- at91sam7_info->cidr = 0;\r
- for (i=0;i<4;i++)\r
- at91sam7_info->flashmode[i]=0;\r
- \r
- return ERROR_OK;\r
-}\r
-\r
-int at91sam7_erase(struct flash_bank_s *bank, int first, int last)\r
-{\r
- at91sam7_flash_bank_t *at91sam7_info = bank->driver_priv;\r
- u8 flashplane;\r
-\r
- if (bank->target->state != TARGET_HALTED)\r
- {\r
- return ERROR_TARGET_NOT_HALTED;\r
- }\r
- \r
- if (at91sam7_info->cidr == 0)\r
- {\r
- at91sam7_read_part_info(bank);\r
- }\r
-\r
- if (at91sam7_info->cidr == 0)\r
- {\r
- WARNING("Cannot identify target as an AT91SAM");\r
- return ERROR_FLASH_OPERATION_FAILED;\r
- } \r
- \r
- if ((first < 0) || (last < first) || (last >= bank->num_sectors))\r
- {\r
- if ((first == 0) && (last == (at91sam7_info->num_lockbits-1)))\r
- {\r
- WARNING("Sector numbers based on lockbit count, probably a deprecated script");\r
- last = bank->num_sectors-1;\r
- }\r
- else return ERROR_FLASH_SECTOR_INVALID;\r
- }\r
-\r
- /* Configure the flash controller timing */\r
- at91sam7_read_clock_info(bank); \r
- for (flashplane = first; flashplane<=last; flashplane++)\r
- {\r
- /* Configure the flash controller timing */\r
- at91sam7_set_flash_mode(bank, flashplane, FMR_TIMING_FLASH);\r
- if (at91sam7_flash_command(bank, flashplane, EA, 0) != ERROR_OK) \r
- {\r
- return ERROR_FLASH_OPERATION_FAILED;\r
- } \r
- }\r
- return ERROR_OK;\r
-\r
-}\r
-\r
-int at91sam7_protect(struct flash_bank_s *bank, int set, int first, int last)\r
-{\r
- u32 cmd, pagen;\r
- u8 flashplane;\r
- int lockregion;\r
- \r
- at91sam7_flash_bank_t *at91sam7_info = bank->driver_priv;\r
- \r
- if (bank->target->state != TARGET_HALTED)\r
- {\r
- return ERROR_TARGET_NOT_HALTED;\r
- }\r
- \r
- if ((first < 0) || (last < first) || (last >= at91sam7_info->num_lockbits))\r
- {\r
- return ERROR_FLASH_SECTOR_INVALID;\r
- }\r
- \r
- if (at91sam7_info->cidr == 0)\r
- {\r
- at91sam7_read_part_info(bank);\r
- }\r
-\r
- if (at91sam7_info->cidr == 0)\r
- {\r
- WARNING("Cannot identify target as an AT91SAM");\r
- return ERROR_FLASH_OPERATION_FAILED;\r
- }\r
- \r
- at91sam7_read_clock_info(bank); \r
- \r
- for (lockregion=first;lockregion<=last;lockregion++) \r
- {\r
- pagen = lockregion*at91sam7_info->pages_in_lockregion;\r
- flashplane = (pagen>>10)&0x03;\r
- /* Configure the flash controller timing */\r
- at91sam7_set_flash_mode(bank, flashplane, FMR_TIMING_NVBITS);\r
- \r
- if (set)\r
- cmd = SLB; \r
- else\r
- cmd = CLB; \r
-\r
- if (at91sam7_flash_command(bank, flashplane, cmd, pagen) != ERROR_OK) \r
- {\r
- return ERROR_FLASH_OPERATION_FAILED;\r
- } \r
- }\r
- \r
- at91sam7_protect_check(bank);\r
- \r
- return ERROR_OK;\r
-}\r
-\r
-\r
-int at91sam7_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)\r
-{\r
- at91sam7_flash_bank_t *at91sam7_info = bank->driver_priv;\r
- target_t *target = bank->target;\r
- u32 dst_min_alignment, wcount, bytes_remaining = count;\r
- u32 first_page, last_page, pagen, buffer_pos;\r
- u8 flashplane;\r
- \r
- if (at91sam7_info->cidr == 0)\r
- {\r
- at91sam7_read_part_info(bank);\r
- }\r
-\r
- if (at91sam7_info->cidr == 0)\r
- {\r
- WARNING("Cannot identify target as an AT91SAM");\r
- return ERROR_FLASH_OPERATION_FAILED;\r
- }\r
- \r
- if (offset + count > bank->size)\r
- return ERROR_FLASH_DST_OUT_OF_BANK;\r
- \r
- dst_min_alignment = at91sam7_info->pagesize;\r
-\r
- if (offset % dst_min_alignment)\r
- {\r
- WARNING("offset 0x%x breaks required alignment 0x%x", offset, dst_min_alignment);\r
- return ERROR_FLASH_DST_BREAKS_ALIGNMENT;\r
- }\r
- \r
- if (at91sam7_info->cidr_arch == 0)\r
- return ERROR_FLASH_BANK_NOT_PROBED;\r
-\r
- first_page = offset/dst_min_alignment;\r
- last_page = CEIL(offset + count, dst_min_alignment);\r
- \r
- DEBUG("first_page: %i, last_page: %i, count %i", first_page, last_page, count);\r
- \r
- at91sam7_read_clock_info(bank); \r
-\r
- for (pagen=first_page; pagen<last_page; pagen++) \r
- {\r
- if (bytes_remaining<dst_min_alignment)\r
- count = bytes_remaining;\r
- else\r
- count = dst_min_alignment;\r
- bytes_remaining -= count;\r
- \r
- /* Write one block to the PageWriteBuffer */\r
- buffer_pos = (pagen-first_page)*dst_min_alignment;\r
- wcount = CEIL(count,4);\r
- target->type->write_memory(target, bank->base+pagen*dst_min_alignment, 4, wcount, buffer+buffer_pos);\r
- flashplane = (pagen>>10)&0x3;\r
- \r
- /* Configure the flash controller timing */ \r
- at91sam7_set_flash_mode(bank, flashplane, FMR_TIMING_FLASH);\r
- /* Send Write Page command to Flash Controller */\r
- if (at91sam7_flash_command(bank, flashplane, WP, pagen) != ERROR_OK) \r
- {\r
- return ERROR_FLASH_OPERATION_FAILED;\r
- }\r
- DEBUG("Write flash plane:%i page number:%i", flashplane, pagen);\r
- }\r
- \r
- return ERROR_OK;\r
-}\r
-\r
-\r
-int at91sam7_probe(struct flash_bank_s *bank)\r
-{\r
- /* we can't probe on an at91sam7\r
- * if this is an at91sam7, it has the configured flash\r
- */\r
- at91sam7_flash_bank_t *at91sam7_info = bank->driver_priv;\r
- at91sam7_info->probed = 0;\r
- \r
- if (at91sam7_info->cidr == 0)\r
- {\r
- at91sam7_read_part_info(bank);\r
- }\r
-\r
- if (at91sam7_info->cidr == 0)\r
- {\r
- WARNING("Cannot identify target as an AT91SAM");\r
- return ERROR_FLASH_OPERATION_FAILED;\r
- }\r
- \r
- at91sam7_info->probed = 1;\r
- \r
- return ERROR_OK;\r
-}\r
-\r
-\r
-int at91sam7_auto_probe(struct flash_bank_s *bank)\r
-{\r
- at91sam7_flash_bank_t *at91sam7_info = bank->driver_priv;\r
- if (at91sam7_info->probed)\r
- return ERROR_OK;\r
- return at91sam7_probe(bank);\r
-}\r
-\r
-int at91sam7_info(struct flash_bank_s *bank, char *buf, int buf_size)\r
-{\r
- int printed, flashplane;\r
- at91sam7_flash_bank_t *at91sam7_info = bank->driver_priv;\r
- \r
- at91sam7_read_part_info(bank);\r
-\r
- if (at91sam7_info->cidr == 0)\r
- {\r
- printed = snprintf(buf, buf_size, "Cannot identify target as an AT91SAM\n");\r
- buf += printed;\r
- buf_size -= printed;\r
- return ERROR_FLASH_OPERATION_FAILED;\r
- }\r
- \r
- printed = snprintf(buf, buf_size, "\nat91sam7 information: Chip is %s\n",at91sam7_info->target_name);\r
- buf += printed;\r
- buf_size -= printed;\r
- \r
- printed = snprintf(buf, buf_size, "cidr: 0x%8.8x, arch: 0x%4.4x, eproc: %s, version:0x%3.3x, flashsize: 0x%8.8x\n",\r
- at91sam7_info->cidr, at91sam7_info->cidr_arch, EPROC[at91sam7_info->cidr_eproc], at91sam7_info->cidr_version, bank->size);\r
- buf += printed;\r
- buf_size -= printed;\r
- \r
- printed = snprintf(buf, buf_size, "master clock(estimated): %ikHz \n", at91sam7_info->mck_freq / 1000);\r
- buf += printed;\r
- buf_size -= printed;\r
- \r
- if (at91sam7_info->num_planes>1) { \r
- printed = snprintf(buf, buf_size, "flashplanes: %i, pagesize: %i, lock regions: %i, pages in lock region: %i \n", \r
- at91sam7_info->num_planes, at91sam7_info->pagesize, at91sam7_info->num_lockbits, at91sam7_info->num_pages/at91sam7_info->num_lockbits);\r
- buf += printed;\r
- buf_size -= printed;\r
- for (flashplane=0; flashplane<at91sam7_info->num_planes; flashplane++)\r
- {\r
- printed = snprintf(buf, buf_size, "lockbits[%i]: 0x%4.4x, ", flashplane, at91sam7_info->lockbits[flashplane]);\r
- buf += printed;\r
- buf_size -= printed;\r
- }\r
- }\r
- else\r
- if (at91sam7_info->num_lockbits>0) { \r
- printed = snprintf(buf, buf_size, "pagesize: %i, lockbits: %i 0x%4.4x, pages in lock region: %i \n", \r
- at91sam7_info->pagesize, at91sam7_info->num_lockbits, at91sam7_info->lockbits[0], at91sam7_info->num_pages/at91sam7_info->num_lockbits);\r
- buf += printed;\r
- buf_size -= printed;\r
- }\r
- \r
- printed = snprintf(buf, buf_size, "securitybit: %i, nvmbits: 0x%1.1x\n", at91sam7_info->securitybit, at91sam7_info->nvmbits);\r
- buf += printed;\r
- buf_size -= printed;\r
-\r
- return ERROR_OK;\r
-}\r
-\r
-/* \r
-* On AT91SAM7S: When the gpnvm bits are set with \r
-* > at91sam7 gpnvm 0 bitnr set\r
-* the changes are not visible in the flash controller status register MC_FSR \r
-* until the processor has been reset.\r
-* On the Olimex board this requires a power cycle.\r
-* Note that the AT91SAM7S has the following errata (doc6175.pdf sec 14.1.3):\r
-* The maximum number of write/erase cycles for Non Volatile Memory bits is 100. This includes\r
-* Lock Bits (LOCKx), General Purpose NVM bits (GPNVMx) and the Security Bit.\r
-*/\r
-int at91sam7_handle_gpnvm_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)\r
-{\r
- flash_bank_t *bank;\r
- int bit;\r
- u8 flashcmd;\r
- u32 status;\r
- char *value;\r
- at91sam7_flash_bank_t *at91sam7_info;\r
-\r
- if (argc < 3)\r
- {\r
- command_print(cmd_ctx, "at91sam7 gpnvm <num> <bit> <set|clear>");\r
- return ERROR_OK;\r
- }\r
- \r
- bank = get_flash_bank_by_num(strtoul(args[0], NULL, 0));\r
- bit = atoi(args[1]);\r
- value = args[2];\r
-\r
- if (!bank)\r
- {\r
- command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);\r
- return ERROR_OK;\r
- }\r
-\r
- at91sam7_info = bank->driver_priv;\r
-\r
- if (bank->target->state != TARGET_HALTED)\r
- {\r
- return ERROR_TARGET_NOT_HALTED;\r
- }\r
- \r
- if (at91sam7_info->cidr == 0)\r
- {\r
- at91sam7_read_part_info(bank);\r
- }\r
-\r
- if (at91sam7_info->cidr == 0)\r
- {\r
- WARNING("Cannot identify target as an AT91SAM");\r
- return ERROR_FLASH_OPERATION_FAILED;\r
- }\r
-\r
- if ((bit<0) || (at91sam7_info->num_nvmbits <= bit))\r
- { \r
- command_print(cmd_ctx, "gpnvm bit '#%s' is out of bounds for target %s", args[1],at91sam7_info->target_name);\r
- return ERROR_OK;\r
- }\r
-\r
- if (strcmp(value, "set") == 0)\r
- {\r
- flashcmd = SGPB;\r
- }\r
- else if (strcmp(value, "clear") == 0)\r
- {\r
- flashcmd = CGPB;\r
- }\r
- else\r
- {\r
- command_print(cmd_ctx, "usage: at91sam7 gpnvm <num> <bit> <set|clear>");\r
- return ERROR_OK;\r
- }\r
-\r
- /* Configure the flash controller timing */\r
- at91sam7_read_clock_info(bank); \r
- at91sam7_set_flash_mode(bank, 0, FMR_TIMING_NVBITS);\r
- \r
- if (at91sam7_flash_command(bank, 0, flashcmd, (u16)(bit)) != ERROR_OK) \r
- {\r
- return ERROR_FLASH_OPERATION_FAILED;\r
- } \r
-\r
- status = at91sam7_get_flash_status(bank, 0);\r
- DEBUG("at91sam7_handle_gpnvm_command: cmd 0x%x, value 0x%x, status 0x%x \n",flashcmd,bit,status);\r
- at91sam7_info->nvmbits = (status>>8)&((1<<at91sam7_info->num_nvmbits)-1);\r
-\r
- return ERROR_OK;\r
-}\r
+/***************************************************************************
+ * Copyright (C) 2006 by Magnus Lundin *
+ * lundin@mlu.mine.nu *
+ * *
+ * Copyright (C) 2008 by Gheorghe Guran (atlas) *
+ * *
+ * This program is free software; you can redistribute it and/or modify *
+ * it under the terms of the GNU General public License as published by *
+ * the Free Software Foundation; either version 2 of the License, or *
+ * (at your option) any later version. *
+ * *
+ * This program is distributed in the hope that it will be useful, *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of *
+ * MERCHANTABILITY or FITNESS for A PARTICULAR PURPOSE. See the *
+ * GNU General public License for more details. *
+ * *
+ * You should have received a copy of the GNU General public License *
+ * along with this program; if not, write to the *
+ * Free Software Foundation, Inc., *
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
+****************************************************************************/
+
+/***************************************************************************************************************************************************************************************
+*
+* New flash setup command:
+*
+* flash bank <driver> <base_addr> <size> <chip_width> <bus_width> <target_number> [<target_name> <banks> <sectors_per_bank> <pages_per_sector> <page_size> <num_nvmbits> <ext_freq_khz>]
+*
+* <ext_freq_khz> - MUST be used if clock is from external source,
+* CAN be used if main oscillator frequency is known (recomended)
+* Examples:
+* flash bank at91sam7 0x00100000 0 0 4 0 0 AT91SAM7XC256 1 16 64 256 3 25000 ==== RECOMENDED ============
+* flash bank at91sam7 0 0 0 0 0 0 0 0 0 0 0 0 25000 (auto-detection, except for clock) ==== RECOMENDED ============
+* flash bank at91sam7 0x00100000 0 0 4 0 0 AT91SAM7XC256 1 16 64 256 3 0 ==== NOT RECOMENDED !!! ====
+* flash bank at91sam7 0 0 0 0 0 (old style, full auto-detection) ==== NOT RECOMENDED !!! ====
+****************************************************************************************************************************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "at91sam7.h"
+#include "binarybuffer.h"
+
+
+static int at91sam7_register_commands(struct command_context_s *cmd_ctx);
+static int at91sam7_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank);
+static int at91sam7_erase(struct flash_bank_s *bank, int first, int last);
+static int at91sam7_protect(struct flash_bank_s *bank, int set, int first, int last);
+static int at91sam7_write(struct flash_bank_s *bank, uint8_t *buffer, uint32_t offset, uint32_t count);
+static int at91sam7_probe(struct flash_bank_s *bank);
+//static int at91sam7_auto_probe(struct flash_bank_s *bank);
+static int at91sam7_erase_check(struct flash_bank_s *bank);
+static int at91sam7_protect_check(struct flash_bank_s *bank);
+static int at91sam7_info(struct flash_bank_s *bank, char *buf, int buf_size);
+
+static uint32_t at91sam7_get_flash_status(target_t *target, int bank_number);
+static void at91sam7_set_flash_mode(flash_bank_t *bank, int mode);
+static uint32_t at91sam7_wait_status_busy(flash_bank_t *bank, uint32_t waitbits, int timeout);
+static int at91sam7_flash_command(struct flash_bank_s *bank, uint8_t cmd, uint16_t pagen);
+static int at91sam7_handle_gpnvm_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+
+flash_driver_t at91sam7_flash =
+{
+ .name = "at91sam7",
+ .register_commands = at91sam7_register_commands,
+ .flash_bank_command = at91sam7_flash_bank_command,
+ .erase = at91sam7_erase,
+ .protect = at91sam7_protect,
+ .write = at91sam7_write,
+ .probe = at91sam7_probe,
+ .auto_probe = at91sam7_probe,
+ .erase_check = at91sam7_erase_check,
+ .protect_check = at91sam7_protect_check,
+ .info = at91sam7_info
+};
+
+static uint32_t MC_FMR[4] = { 0xFFFFFF60, 0xFFFFFF70, 0xFFFFFF80, 0xFFFFFF90 };
+static uint32_t MC_FCR[4] = { 0xFFFFFF64, 0xFFFFFF74, 0xFFFFFF84, 0xFFFFFF94 };
+static uint32_t MC_FSR[4] = { 0xFFFFFF68, 0xFFFFFF78, 0xFFFFFF88, 0xFFFFFF98 };
+
+static char * EPROC[8]= {"Unknown","ARM946-E","ARM7TDMI","Unknown","ARM920T","ARM926EJ-S","Unknown","Unknown"};
+
+#if 0
+static long SRAMSIZ[16] = {
+ -1,
+ 0x0400, /* 1K */
+ 0x0800, /* 2K */
+ -1,
+ 0x1c000, /* 112K */
+ 0x1000, /* 4K */
+ 0x14000, /* 80K */
+ 0x28000, /* 160K */
+ 0x2000, /* 8K */
+ 0x4000, /* 16K */
+ 0x8000, /* 32K */
+ 0x10000, /* 64K */
+ 0x20000, /* 128K */
+ 0x40000, /* 256K */
+ 0x18000, /* 96K */
+ 0x80000, /* 512K */
+};
+#endif
+
+static int at91sam7_register_commands(struct command_context_s *cmd_ctx)
+{
+ command_t *at91sam7_cmd = register_command(cmd_ctx, NULL, "at91sam7", NULL, COMMAND_ANY, NULL);
+
+ register_command(cmd_ctx, at91sam7_cmd, "gpnvm", at91sam7_handle_gpnvm_command, COMMAND_EXEC,
+ "at91sam7 gpnvm <bit> set | clear, set or clear one gpnvm bit");
+ return ERROR_OK;
+}
+
+static uint32_t at91sam7_get_flash_status(target_t *target, int bank_number)
+{
+ uint32_t fsr;
+ target_read_u32(target, MC_FSR[bank_number], &fsr);
+
+ return fsr;
+}
+
+/* Read clock configuration and set at91sam7_info->mck_freq */
+static void at91sam7_read_clock_info(flash_bank_t *bank)
+{
+ at91sam7_flash_bank_t *at91sam7_info = bank->driver_priv;
+ target_t *target = bank->target;
+ uint32_t mckr, mcfr, pllr, mor;
+ unsigned long tmp = 0, mainfreq;
+
+ /* Read Clock Generator Main Oscillator Register */
+ target_read_u32(target, CKGR_MOR, &mor);
+ /* Read Clock Generator Main Clock Frequency Register */
+ target_read_u32(target, CKGR_MCFR, &mcfr);
+ /* Read Master Clock Register*/
+ target_read_u32(target, PMC_MCKR, &mckr);
+ /* Read Clock Generator PLL Register */
+ target_read_u32(target, CKGR_PLLR, &pllr);
+
+ at91sam7_info->mck_valid = 0;
+ at91sam7_info->mck_freq = 0;
+ switch (mckr & PMC_MCKR_CSS)
+ {
+ case 0: /* Slow Clock */
+ at91sam7_info->mck_valid = 1;
+ tmp = RC_FREQ;
+ break;
+
+ case 1: /* Main Clock */
+ if ((mcfr & CKGR_MCFR_MAINRDY) &&
+ (at91sam7_info->ext_freq == 0))
+ {
+ at91sam7_info->mck_valid = 1;
+ tmp = RC_FREQ / 16ul * (mcfr & 0xffff);
+ }
+ else if (at91sam7_info->ext_freq != 0)
+ {
+ at91sam7_info->mck_valid = 1;
+ tmp = at91sam7_info->ext_freq;
+ }
+ break;
+
+ case 2: /* Reserved */
+ break;
+
+ case 3: /* PLL Clock */
+ if ((mcfr & CKGR_MCFR_MAINRDY) &&
+ (at91sam7_info->ext_freq == 0))
+ {
+ target_read_u32(target, CKGR_PLLR, &pllr);
+ if (!(pllr & CKGR_PLLR_DIV))
+ break; /* 0 Hz */
+ at91sam7_info->mck_valid = 1;
+ mainfreq = RC_FREQ / 16ul * (mcfr & 0xffff);
+ /* Integer arithmetic should have sufficient precision
+ * as long as PLL is properly configured. */
+ tmp = mainfreq / (pllr & CKGR_PLLR_DIV)*
+ (((pllr & CKGR_PLLR_MUL) >> 16) + 1);
+ }
+ else if ((at91sam7_info->ext_freq != 0) &&
+ ((pllr&CKGR_PLLR_DIV) != 0))
+ {
+ at91sam7_info->mck_valid = 1;
+ tmp = at91sam7_info->ext_freq / (pllr&CKGR_PLLR_DIV)*
+ (((pllr & CKGR_PLLR_MUL) >> 16) + 1);
+ }
+ break;
+ }
+
+ /* Prescaler adjust */
+ if ((((mckr & PMC_MCKR_PRES) >> 2) == 7) || (tmp == 0) )
+ {
+ at91sam7_info->mck_valid = 0;
+ at91sam7_info->mck_freq = 0;
+ }
+ else if (((mckr & PMC_MCKR_PRES) >> 2) != 0)
+ at91sam7_info->mck_freq = tmp >> ((mckr & PMC_MCKR_PRES) >> 2);
+ else
+ at91sam7_info->mck_freq = tmp;
+}
+
+/* Setup the timimg registers for nvbits or normal flash */
+static void at91sam7_set_flash_mode(flash_bank_t *bank, int mode)
+{
+ uint32_t fmr, fmcn = 0, fws = 0;
+ at91sam7_flash_bank_t *at91sam7_info = bank->driver_priv;
+ target_t *target = bank->target;
+
+ if (mode && (mode != at91sam7_info->flashmode))
+ {
+ /* Always round up (ceil) */
+ if (mode == FMR_TIMING_NVBITS)
+ {
+ if (at91sam7_info->cidr_arch == 0x60)
+ {
+ /* AT91SAM7A3 uses master clocks in 100 ns */
+ fmcn = (at91sam7_info->mck_freq/10000000ul) + 1;
+ }
+ else
+ {
+ /* master clocks in 1uS for ARCH 0x7 types */
+ fmcn = (at91sam7_info->mck_freq/1000000ul) + 1;
+ }
+ }
+ else if (mode == FMR_TIMING_FLASH)
+ {
+ /* main clocks in 1.5uS */
+ fmcn = (at91sam7_info->mck_freq/1000000ul)+
+ (at91sam7_info->mck_freq/2000000ul) + 1;
+ }
+
+ /* hard overclocking */
+ if (fmcn > 0xFF)
+ fmcn = 0xFF;
+
+ /* Only allow fmcn = 0 if clock period is > 30 us = 33kHz. */
+ if (at91sam7_info->mck_freq <= 33333ul)
+ fmcn = 0;
+ /* Only allow fws = 0 if clock frequency is < 30 MHz. */
+ if (at91sam7_info->mck_freq > 30000000ul)
+ fws = 1;
+
+ LOG_DEBUG("fmcn[%i]: %i", bank->bank_number, (int)(fmcn));
+ fmr = fmcn << 16 | fws << 8;
+ target_write_u32(target, MC_FMR[bank->bank_number], fmr);
+ }
+
+ at91sam7_info->flashmode = mode;
+}
+
+static uint32_t at91sam7_wait_status_busy(flash_bank_t *bank, uint32_t waitbits, int timeout)
+{
+ uint32_t status;
+
+ while ((!((status = at91sam7_get_flash_status(bank->target, bank->bank_number)) & waitbits)) && (timeout-- > 0))
+ {
+ LOG_DEBUG("status[%i]: 0x%" PRIx32 "", (int)bank->bank_number, status);
+ alive_sleep(1);
+ }
+
+ LOG_DEBUG("status[%i]: 0x%" PRIx32 "", bank->bank_number, status);
+
+ if (status & 0x0C)
+ {
+ LOG_ERROR("status register: 0x%" PRIx32 "", status);
+ if (status & 0x4)
+ LOG_ERROR("Lock Error Bit Detected, Operation Abort");
+ if (status & 0x8)
+ LOG_ERROR("Invalid command and/or bad keyword, Operation Abort");
+ if (status & 0x10)
+ LOG_ERROR("Security Bit Set, Operation Abort");
+ }
+
+ return status;
+}
+
+/* Send one command to the AT91SAM flash controller */
+static int at91sam7_flash_command(struct flash_bank_s *bank, uint8_t cmd, uint16_t pagen)
+{
+ uint32_t fcr;
+ at91sam7_flash_bank_t *at91sam7_info = bank->driver_priv;
+ target_t *target = bank->target;
+
+ fcr = (0x5A << 24) | ((pagen&0x3FF) << 8) | cmd;
+ target_write_u32(target, MC_FCR[bank->bank_number], fcr);
+ LOG_DEBUG("Flash command: 0x%" PRIx32 ", flash bank: %i, page number: %u", fcr, bank->bank_number + 1, pagen);
+
+ if ((at91sam7_info->cidr_arch == 0x60) && ((cmd == SLB) | (cmd == CLB)))
+ {
+ /* Lock bit manipulation on AT91SAM7A3 waits for FC_FSR bit 1, EOL */
+ if (at91sam7_wait_status_busy(bank, MC_FSR_EOL, 10)&0x0C)
+ {
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+ return ERROR_OK;
+ }
+
+ if (at91sam7_wait_status_busy(bank, MC_FSR_FRDY, 10)&0x0C)
+ {
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+
+ return ERROR_OK;
+}
+
+/* Read device id register, main clock frequency register and fill in driver info structure */
+static int at91sam7_read_part_info(struct flash_bank_s *bank)
+{
+ flash_bank_t *t_bank = bank;
+ at91sam7_flash_bank_t *at91sam7_info;
+ target_t *target = t_bank->target;
+
+ uint16_t bnk, sec;
+ uint16_t arch;
+ uint32_t cidr;
+ uint8_t banks_num = 0;
+ uint16_t num_nvmbits = 0;
+ uint16_t sectors_num = 0;
+ uint16_t pages_per_sector = 0;
+ uint16_t page_size = 0;
+ uint32_t ext_freq;
+ uint32_t bank_size;
+ uint32_t base_address = 0;
+ char *target_name = "Unknown";
+
+ at91sam7_info = t_bank->driver_priv;
+
+ if (at91sam7_info->cidr != 0)
+ {
+ /* flash already configured, update clock and check for protected sectors */
+ flash_bank_t *fb = bank;
+ t_bank = fb;
+
+ while (t_bank)
+ {
+ /* re-calculate master clock frequency */
+ at91sam7_read_clock_info(t_bank);
+
+ /* no timming */
+ at91sam7_set_flash_mode(t_bank, FMR_TIMING_NONE);
+
+ /* check protect state */
+ at91sam7_protect_check(t_bank);
+
+ t_bank = fb->next;
+ fb = t_bank;
+ }
+
+ return ERROR_OK;
+ }
+
+ /* Read and parse chip identification register */
+ target_read_u32(target, DBGU_CIDR, &cidr);
+ if (cidr == 0)
+ {
+ LOG_WARNING("Cannot identify target as an AT91SAM");
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+
+ if (at91sam7_info->flash_autodetection == 0)
+ {
+ /* banks and sectors are already created, based on data from input file */
+ flash_bank_t *fb = bank;
+ t_bank = fb;
+ while (t_bank)
+ {
+ at91sam7_info = t_bank->driver_priv;
+
+ at91sam7_info->cidr = cidr;
+ at91sam7_info->cidr_ext = (cidr >> 31)&0x0001;
+ at91sam7_info->cidr_nvptyp = (cidr >> 28)&0x0007;
+ at91sam7_info->cidr_arch = (cidr >> 20)&0x00FF;
+ at91sam7_info->cidr_sramsiz = (cidr >> 16)&0x000F;
+ at91sam7_info->cidr_nvpsiz2 = (cidr >> 12)&0x000F;
+ at91sam7_info->cidr_nvpsiz = (cidr >> 8)&0x000F;
+ at91sam7_info->cidr_eproc = (cidr >> 5)&0x0007;
+ at91sam7_info->cidr_version = cidr&0x001F;
+
+ /* calculate master clock frequency */
+ at91sam7_read_clock_info(t_bank);
+
+ /* no timming */
+ at91sam7_set_flash_mode(t_bank, FMR_TIMING_NONE);
+
+ /* check protect state */
+ at91sam7_protect_check(t_bank);
+
+ t_bank = fb->next;
+ fb = t_bank;
+ }
+
+ return ERROR_OK;
+ }
+
+ arch = (cidr >> 20)&0x00FF;
+
+ /* check flash size */
+ switch ((cidr >> 8)&0x000F)
+ {
+ case FLASH_SIZE_8KB:
+ break;
+
+ case FLASH_SIZE_16KB:
+ banks_num = 1;
+ sectors_num = 8;
+ pages_per_sector = 32;
+ page_size = 64;
+ base_address = 0x00100000;
+ if (arch == 0x70)
+ {
+ num_nvmbits = 2;
+ target_name = "AT91SAM7S161/16";
+ }
+ break;
+
+ case FLASH_SIZE_32KB:
+ banks_num = 1;
+ sectors_num = 8;
+ pages_per_sector = 32;
+ page_size = 128;
+ base_address = 0x00100000;
+ if (arch == 0x70)
+ {
+ num_nvmbits = 2;
+ target_name = "AT91SAM7S321/32";
+ }
+ if (arch == 0x72)
+ {
+ num_nvmbits = 3;
+ target_name = "AT91SAM7SE32";
+ }
+ break;
+
+ case FLASH_SIZE_64KB:
+ banks_num = 1;
+ sectors_num = 16;
+ pages_per_sector = 32;
+ page_size = 128;
+ base_address = 0x00100000;
+ if (arch == 0x70)
+ {
+ num_nvmbits = 2;
+ target_name = "AT91SAM7S64";
+ }
+ break;
+
+ case FLASH_SIZE_128KB:
+ banks_num = 1;
+ sectors_num = 8;
+ pages_per_sector = 64;
+ page_size = 256;
+ base_address = 0x00100000;
+ if (arch == 0x70)
+ {
+ num_nvmbits = 2;
+ target_name = "AT91SAM7S128";
+ }
+ if (arch == 0x71)
+ {
+ num_nvmbits = 3;
+ target_name = "AT91SAM7XC128";
+ }
+ if (arch == 0x72)
+ {
+ num_nvmbits = 3;
+ target_name = "AT91SAM7SE128";
+ }
+ if (arch == 0x75)
+ {
+ num_nvmbits = 3;
+ target_name = "AT91SAM7X128";
+ }
+ break;
+
+ case FLASH_SIZE_256KB:
+ banks_num = 1;
+ sectors_num = 16;
+ pages_per_sector = 64;
+ page_size = 256;
+ base_address = 0x00100000;
+ if (arch == 0x60)
+ {
+ num_nvmbits = 3;
+ target_name = "AT91SAM7A3";
+ }
+ if (arch == 0x70)
+ {
+ num_nvmbits = 2;
+ target_name = "AT91SAM7S256";
+ }
+ if (arch == 0x71)
+ {
+ num_nvmbits = 3;
+ target_name = "AT91SAM7XC256";
+ }
+ if (arch == 0x72)
+ {
+ num_nvmbits = 3;
+ target_name = "AT91SAM7SE256";
+ }
+ if (arch == 0x75)
+ {
+ num_nvmbits = 3;
+ target_name = "AT91SAM7X256";
+ }
+ break;
+
+ case FLASH_SIZE_512KB:
+ banks_num = 2;
+ sectors_num = 16;
+ pages_per_sector = 64;
+ page_size = 256;
+ base_address = 0x00100000;
+ if (arch == 0x70)
+ {
+ num_nvmbits = 2;
+ target_name = "AT91SAM7S512";
+ }
+ if (arch == 0x71)
+ {
+ num_nvmbits = 3;
+ target_name = "AT91SAM7XC512";
+ }
+ if (arch == 0x72)
+ {
+ num_nvmbits = 3;
+ target_name = "AT91SAM7SE512";
+ }
+ if (arch == 0x75)
+ {
+ num_nvmbits = 3;
+ target_name = "AT91SAM7X512";
+ }
+ break;
+
+ case FLASH_SIZE_1024KB:
+ break;
+
+ case FLASH_SIZE_2048KB:
+ break;
+ }
+
+ if (strcmp(target_name, "Unknown") == 0)
+ {
+ LOG_ERROR("Target autodetection failed! Please specify target parameters in configuration file");
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+
+ ext_freq = at91sam7_info->ext_freq;
+
+ /* calculate bank size */
+ bank_size = sectors_num * pages_per_sector * page_size;
+
+ for (bnk = 0; bnk < banks_num; bnk++)
+ {
+ if (bnk > 0)
+ {
+ /* create a new flash bank element */
+ flash_bank_t *fb = malloc(sizeof(flash_bank_t));
+ fb->target = target;
+ fb->driver = &at91sam7_flash;
+ fb->driver_priv = malloc(sizeof(at91sam7_flash_bank_t));
+ fb->next = NULL;
+
+ /* link created bank in 'flash_banks' list and redirect t_bank */
+ t_bank->next = fb;
+ t_bank = fb;
+ }
+
+ t_bank->bank_number = bnk;
+ t_bank->base = base_address + bnk * bank_size;
+ t_bank->size = bank_size;
+ t_bank->chip_width = 0;
+ t_bank->bus_width = 4;
+ t_bank->num_sectors = sectors_num;
+
+ /* allocate sectors */
+ t_bank->sectors = malloc(sectors_num * sizeof(flash_sector_t));
+ for (sec = 0; sec < sectors_num; sec++)
+ {
+ t_bank->sectors[sec].offset = sec * pages_per_sector * page_size;
+ t_bank->sectors[sec].size = pages_per_sector * page_size;
+ t_bank->sectors[sec].is_erased = -1;
+ t_bank->sectors[sec].is_protected = -1;
+ }
+
+ at91sam7_info = t_bank->driver_priv;
+
+ at91sam7_info->cidr = cidr;
+ at91sam7_info->cidr_ext = (cidr >> 31)&0x0001;
+ at91sam7_info->cidr_nvptyp = (cidr >> 28)&0x0007;
+ at91sam7_info->cidr_arch = (cidr >> 20)&0x00FF;
+ at91sam7_info->cidr_sramsiz = (cidr >> 16)&0x000F;
+ at91sam7_info->cidr_nvpsiz2 = (cidr >> 12)&0x000F;
+ at91sam7_info->cidr_nvpsiz = (cidr >> 8)&0x000F;
+ at91sam7_info->cidr_eproc = (cidr >> 5)&0x0007;
+ at91sam7_info->cidr_version = cidr&0x001F;
+
+ at91sam7_info->target_name = target_name;
+ at91sam7_info->flashmode = 0;
+ at91sam7_info->ext_freq = ext_freq;
+ at91sam7_info->num_nvmbits = num_nvmbits;
+ at91sam7_info->num_nvmbits_on = 0;
+ at91sam7_info->pagesize = page_size;
+ at91sam7_info->pages_per_sector = pages_per_sector;
+
+ /* calculate master clock frequency */
+ at91sam7_read_clock_info(t_bank);
+
+ /* no timming */
+ at91sam7_set_flash_mode(t_bank, FMR_TIMING_NONE);
+
+ /* check protect state */
+ at91sam7_protect_check(t_bank);
+ }
+
+ LOG_DEBUG("nvptyp: 0x%3.3x, arch: 0x%4.4x", at91sam7_info->cidr_nvptyp, at91sam7_info->cidr_arch );
+
+ return ERROR_OK;
+}
+
+static int at91sam7_erase_check(struct flash_bank_s *bank)
+{
+ target_t *target = bank->target;
+ uint16_t retval;
+ uint32_t blank;
+ uint16_t fast_check;
+ uint8_t *buffer;
+ uint16_t nSector;
+ uint16_t nByte;
+
+ if (bank->target->state != TARGET_HALTED)
+ {
+ LOG_ERROR("Target not halted");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ /* Configure the flash controller timing */
+ at91sam7_read_clock_info(bank);
+ at91sam7_set_flash_mode(bank, FMR_TIMING_FLASH);
+
+ fast_check = 1;
+ for (nSector = 0; nSector < bank->num_sectors; nSector++)
+ {
+ retval = target_blank_check_memory(target, bank->base + bank->sectors[nSector].offset,
+ bank->sectors[nSector].size, &blank);
+ if (retval != ERROR_OK)
+ {
+ fast_check = 0;
+ break;
+ }
+ if (blank == 0xFF)
+ bank->sectors[nSector].is_erased = 1;
+ else
+ bank->sectors[nSector].is_erased = 0;
+ }
+
+ if (fast_check)
+ {
+ return ERROR_OK;
+ }
+
+ LOG_USER("Running slow fallback erase check - add working memory");
+
+ buffer = malloc(bank->sectors[0].size);
+ for (nSector = 0; nSector < bank->num_sectors; nSector++)
+ {
+ bank->sectors[nSector].is_erased = 1;
+ retval = target_read_memory(target, bank->base + bank->sectors[nSector].offset, 4,
+ bank->sectors[nSector].size/4, buffer);
+ if (retval != ERROR_OK)
+ return retval;
+
+ for (nByte = 0; nByte < bank->sectors[nSector].size; nByte++)
+ {
+ if (buffer[nByte] != 0xFF)
+ {
+ bank->sectors[nSector].is_erased = 0;
+ break;
+ }
+ }
+ }
+ free(buffer);
+
+ return ERROR_OK;
+}
+
+static int at91sam7_protect_check(struct flash_bank_s *bank)
+{
+ uint8_t lock_pos, gpnvm_pos;
+ uint32_t status;
+
+ at91sam7_flash_bank_t *at91sam7_info = bank->driver_priv;
+
+ if (at91sam7_info->cidr == 0)
+ {
+ return ERROR_FLASH_BANK_NOT_PROBED;
+ }
+ if (bank->target->state != TARGET_HALTED)
+ {
+ LOG_ERROR("Target not halted");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ status = at91sam7_get_flash_status(bank->target, bank->bank_number);
+ at91sam7_info->lockbits = (status >> 16);
+
+ at91sam7_info->num_lockbits_on = 0;
+ for (lock_pos = 0; lock_pos < bank->num_sectors; lock_pos++)
+ {
+ if (((status >> (16 + lock_pos))&(0x0001)) == 1)
+ {
+ at91sam7_info->num_lockbits_on++;
+ bank->sectors[lock_pos].is_protected = 1;
+ }
+ else
+ bank->sectors[lock_pos].is_protected = 0;
+ }
+
+ /* GPNVM and SECURITY bits apply only for MC_FSR of EFC0 */
+ status = at91sam7_get_flash_status(bank->target, 0);
+
+ at91sam7_info->securitybit = (status >> 4)&0x01;
+ at91sam7_info->nvmbits = (status >> 8)&0xFF;
+
+ at91sam7_info->num_nvmbits_on = 0;
+ for (gpnvm_pos = 0; gpnvm_pos < at91sam7_info->num_nvmbits; gpnvm_pos++)
+ {
+ if (((status >> (8 + gpnvm_pos))&(0x01)) == 1)
+ {
+ at91sam7_info->num_nvmbits_on++;
+ }
+ }
+
+ return ERROR_OK;
+}
+
+/***************************************************************************************************************************************************************************************
+# flash bank <driver> <base_addr> <size> <chip_width> <bus_width> <target_number> [<target_name> <banks> <sectors_per_bank> <pages_per_sector> <page_size> <num_nvmbits> <ext_freq_khz>]
+# <ext_freq_khz> - MUST be used if clock is from external source
+# CAN be used if main oscillator frequency is known
+# Examples:
+# flash bank at91sam7 0x00100000 0 0 4 0 0 AT91SAM7XC256 1 16 64 256 3 25000 ==== RECOMENDED ============
+# flash bank at91sam7 0 0 0 0 0 0 0 0 0 0 0 0 25000 (auto-detection, except for clock) ==== RECOMENDED ============
+# flash bank at91sam7 0x00100000 0 0 4 0 0 AT91SAM7XC256 1 16 64 256 3 0 ==== NOT RECOMENDED !!! ====
+# flash bank at91sam7 0 0 0 0 0 (old style, full auto-detection) ==== NOT RECOMENDED !!! ====
+****************************************************************************************************************************************************************************************/
+static int at91sam7_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank)
+{
+ flash_bank_t *t_bank = bank;
+ at91sam7_flash_bank_t *at91sam7_info;
+ target_t *target = t_bank->target;
+
+ uint32_t base_address;
+ uint32_t bank_size;
+ uint32_t ext_freq;
+
+ int chip_width;
+ int bus_width;
+ int banks_num;
+ int num_sectors;
+
+ uint16_t pages_per_sector;
+ uint16_t page_size;
+ uint16_t num_nvmbits;
+
+ char *target_name;
+
+ int bnk, sec;
+
+ at91sam7_info = malloc(sizeof(at91sam7_flash_bank_t));
+ t_bank->driver_priv = at91sam7_info;
+
+ /* part wasn't probed for info yet */
+ at91sam7_info->cidr = 0;
+ at91sam7_info->flashmode = 0;
+ at91sam7_info->ext_freq = 0;
+ at91sam7_info->flash_autodetection = 0;
+
+ if (argc == 14)
+ {
+ ext_freq = atol(args[13]) * 1000;
+ at91sam7_info->ext_freq = ext_freq;
+ }
+
+ if ((argc != 14) ||
+ (atoi(args[4]) == 0) || /* bus width */
+ (atoi(args[8]) == 0) || /* banks number */
+ (atoi(args[9]) == 0) || /* sectors per bank */
+ (atoi(args[10]) == 0) || /* pages per sector */
+ (atoi(args[11]) == 0) || /* page size */
+ (atoi(args[12]) == 0)) /* nvmbits number */
+ {
+ at91sam7_info->flash_autodetection = 1;
+ return ERROR_OK;
+ }
+
+ base_address = strtoul(args[1], NULL, 0);
+ chip_width = atoi(args[3]);
+ bus_width = atoi(args[4]);
+ banks_num = atoi(args[8]);
+ num_sectors = atoi(args[9]);
+ pages_per_sector = atoi(args[10]);
+ page_size = atoi(args[11]);
+ num_nvmbits = atoi(args[12]);
+
+ target_name = calloc(strlen(args[7]) + 1, sizeof(char));
+ strcpy(target_name, args[7]);
+
+ /* calculate bank size */
+ bank_size = num_sectors * pages_per_sector * page_size;
+
+ for (bnk = 0; bnk < banks_num; bnk++)
+ {
+ if (bnk > 0)
+ {
+ /* create a new bank element */
+ flash_bank_t *fb = malloc(sizeof(flash_bank_t));
+ fb->target = target;
+ fb->driver = &at91sam7_flash;
+ fb->driver_priv = malloc(sizeof(at91sam7_flash_bank_t));
+ fb->next = NULL;
+
+ /* link created bank in 'flash_banks' list and redirect t_bank */
+ t_bank->next = fb;
+ t_bank = fb;
+ }
+
+ t_bank->bank_number = bnk;
+ t_bank->base = base_address + bnk * bank_size;
+ t_bank->size = bank_size;
+ t_bank->chip_width = chip_width;
+ t_bank->bus_width = bus_width;
+ t_bank->num_sectors = num_sectors;
+
+ /* allocate sectors */
+ t_bank->sectors = malloc(num_sectors * sizeof(flash_sector_t));
+ for (sec = 0; sec < num_sectors; sec++)
+ {
+ t_bank->sectors[sec].offset = sec * pages_per_sector * page_size;
+ t_bank->sectors[sec].size = pages_per_sector * page_size;
+ t_bank->sectors[sec].is_erased = -1;
+ t_bank->sectors[sec].is_protected = -1;
+ }
+
+ at91sam7_info = t_bank->driver_priv;
+
+ at91sam7_info->target_name = target_name;
+ at91sam7_info->flashmode = 0;
+ at91sam7_info->ext_freq = ext_freq;
+ at91sam7_info->num_nvmbits = num_nvmbits;
+ at91sam7_info->num_nvmbits_on = 0;
+ at91sam7_info->pagesize = page_size;
+ at91sam7_info->pages_per_sector = pages_per_sector;
+ }
+
+ return ERROR_OK;
+}
+
+static int at91sam7_erase(struct flash_bank_s *bank, int first, int last)
+{
+ at91sam7_flash_bank_t *at91sam7_info = bank->driver_priv;
+ int sec;
+ uint32_t nbytes, pos;
+ uint8_t *buffer;
+ uint8_t erase_all;
+
+ if (at91sam7_info->cidr == 0)
+ {
+ return ERROR_FLASH_BANK_NOT_PROBED;
+ }
+
+ if (bank->target->state != TARGET_HALTED)
+ {
+ LOG_ERROR("Target not halted");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ if ((first < 0) || (last < first) || (last >= bank->num_sectors))
+ {
+ return ERROR_FLASH_SECTOR_INVALID;
+ }
+
+ erase_all = 0;
+ if ((first == 0) && (last == (bank->num_sectors-1)))
+ {
+ erase_all = 1;
+ }
+
+ /* Configure the flash controller timing */
+ at91sam7_read_clock_info(bank);
+ at91sam7_set_flash_mode(bank, FMR_TIMING_FLASH);
+
+ if (erase_all)
+ {
+ if (at91sam7_flash_command(bank, EA, 0) != ERROR_OK)
+ {
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+ }
+ else
+ {
+ /* allocate and clean buffer */
+ nbytes = (last - first + 1) * bank->sectors[first].size;
+ buffer = malloc(nbytes * sizeof(uint8_t));
+ for (pos = 0; pos < nbytes; pos++)
+ {
+ buffer[pos] = 0xFF;
+ }
+
+ if (at91sam7_write(bank, buffer, bank->sectors[first].offset, nbytes) != ERROR_OK)
+ {
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+
+ free(buffer);
+ }
+
+ /* mark erased sectors */
+ for (sec = first; sec <= last; sec++)
+ {
+ bank->sectors[sec].is_erased = 1;
+ }
+
+ return ERROR_OK;
+}
+
+static int at91sam7_protect(struct flash_bank_s *bank, int set, int first, int last)
+{
+ uint32_t cmd;
+ int sector;
+ uint32_t pagen;
+
+ at91sam7_flash_bank_t *at91sam7_info = bank->driver_priv;
+
+ if (at91sam7_info->cidr == 0)
+ {
+ return ERROR_FLASH_BANK_NOT_PROBED;
+ }
+
+ if (bank->target->state != TARGET_HALTED)
+ {
+ LOG_ERROR("Target not halted");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ if ((first < 0) || (last < first) || (last >= bank->num_sectors))
+ {
+ return ERROR_FLASH_SECTOR_INVALID;
+ }
+
+ /* Configure the flash controller timing */
+ at91sam7_read_clock_info(bank);
+ at91sam7_set_flash_mode(bank, FMR_TIMING_NVBITS);
+
+ for (sector = first; sector <= last; sector++)
+ {
+ if (set)
+ cmd = SLB;
+ else
+ cmd = CLB;
+
+ /* if we lock a page from one sector then entire sector will be locked, also,
+ * if we unlock a page from a locked sector, entire sector will be unlocked */
+ pagen = sector * at91sam7_info->pages_per_sector;
+
+ if (at91sam7_flash_command(bank, cmd, pagen) != ERROR_OK)
+ {
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+ }
+
+ at91sam7_protect_check(bank);
+
+ return ERROR_OK;
+}
+
+static int at91sam7_write(struct flash_bank_s *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
+{
+ int retval;
+ at91sam7_flash_bank_t *at91sam7_info = bank->driver_priv;
+ target_t *target = bank->target;
+ uint32_t dst_min_alignment, wcount, bytes_remaining = count;
+ uint32_t first_page, last_page, pagen, buffer_pos;
+
+ if (at91sam7_info->cidr == 0)
+ {
+ return ERROR_FLASH_BANK_NOT_PROBED;
+ }
+
+ if (bank->target->state != TARGET_HALTED)
+ {
+ LOG_ERROR("Target not halted");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ if (offset + count > bank->size)
+ return ERROR_FLASH_DST_OUT_OF_BANK;
+
+ dst_min_alignment = at91sam7_info->pagesize;
+
+ if (offset % dst_min_alignment)
+ {
+ LOG_WARNING("offset 0x%" PRIx32 " breaks required alignment 0x%" PRIx32 "", offset, dst_min_alignment);
+ return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
+ }
+
+ if (at91sam7_info->cidr_arch == 0)
+ return ERROR_FLASH_BANK_NOT_PROBED;
+
+ first_page = offset/dst_min_alignment;
+ last_page = CEIL(offset + count, dst_min_alignment);
+
+ LOG_DEBUG("first_page: %i, last_page: %i, count %i", (int)first_page, (int)last_page, (int)count);
+
+ /* Configure the flash controller timing */
+ at91sam7_read_clock_info(bank);
+ at91sam7_set_flash_mode(bank, FMR_TIMING_FLASH);
+
+ for (pagen = first_page; pagen < last_page; pagen++)
+ {
+ if (bytes_remaining < dst_min_alignment)
+ count = bytes_remaining;
+ else
+ count = dst_min_alignment;
+ bytes_remaining -= count;
+
+ /* Write one block to the PageWriteBuffer */
+ buffer_pos = (pagen-first_page)*dst_min_alignment;
+ wcount = CEIL(count,4);
+ if ((retval = target_write_memory(target, bank->base + pagen*dst_min_alignment, 4, wcount, buffer + buffer_pos)) != ERROR_OK)
+ {
+ return retval;
+ }
+
+ /* Send Write Page command to Flash Controller */
+ if (at91sam7_flash_command(bank, WP, pagen) != ERROR_OK)
+ {
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+ LOG_DEBUG("Write flash bank:%i page number:%" PRIi32 "", bank->bank_number, pagen);
+ }
+
+ return ERROR_OK;
+}
+
+static int at91sam7_probe(struct flash_bank_s *bank)
+{
+ /* we can't probe on an at91sam7
+ * if this is an at91sam7, it has the configured flash */
+ int retval;
+
+ if (bank->target->state != TARGET_HALTED)
+ {
+ LOG_ERROR("Target not halted");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ retval = at91sam7_read_part_info(bank);
+ if (retval != ERROR_OK)
+ return retval;
+
+ return ERROR_OK;
+}
+
+static int at91sam7_info(struct flash_bank_s *bank, char *buf, int buf_size)
+{
+ int printed;
+ at91sam7_flash_bank_t *at91sam7_info = bank->driver_priv;
+
+ if (at91sam7_info->cidr == 0)
+ {
+ return ERROR_FLASH_BANK_NOT_PROBED;
+ }
+
+ printed = snprintf(buf, buf_size,
+ "\n at91sam7 driver information: Chip is %s\n",
+ at91sam7_info->target_name);
+
+ buf += printed;
+ buf_size -= printed;
+
+ printed = snprintf(buf,
+ buf_size,
+ " Cidr: 0x%8.8" PRIx32 " | Arch: 0x%4.4x | Eproc: %s | Version: 0x%3.3x | Flashsize: 0x%8.8" PRIx32 "\n",
+ at91sam7_info->cidr,
+ at91sam7_info->cidr_arch,
+ EPROC[at91sam7_info->cidr_eproc],
+ at91sam7_info->cidr_version,
+ bank->size);
+
+ buf += printed;
+ buf_size -= printed;
+
+ printed = snprintf(buf, buf_size,
+ " Master clock (estimated): %u KHz | External clock: %u KHz\n",
+ (unsigned)(at91sam7_info->mck_freq / 1000), (unsigned)(at91sam7_info->ext_freq / 1000));
+
+ buf += printed;
+ buf_size -= printed;
+
+ printed = snprintf(buf, buf_size,
+ " Pagesize: %i bytes | Lockbits(%i): %i 0x%4.4x | Pages in lock region: %i \n",
+ at91sam7_info->pagesize, bank->num_sectors, at91sam7_info->num_lockbits_on,
+ at91sam7_info->lockbits, at91sam7_info->pages_per_sector*at91sam7_info->num_lockbits_on);
+
+ buf += printed;
+ buf_size -= printed;
+
+ printed = snprintf(buf, buf_size,
+ " Securitybit: %i | Nvmbits(%i): %i 0x%1.1x\n",
+ at91sam7_info->securitybit, at91sam7_info->num_nvmbits,
+ at91sam7_info->num_nvmbits_on, at91sam7_info->nvmbits);
+
+ buf += printed;
+ buf_size -= printed;
+
+ return ERROR_OK;
+}
+
+/*
+* On AT91SAM7S: When the gpnvm bits are set with
+* > at91sam7 gpnvm bitnr set
+* the changes are not visible in the flash controller status register MC_FSR
+* until the processor has been reset.
+* On the Olimex board this requires a power cycle.
+* Note that the AT91SAM7S has the following errata (doc6175.pdf sec 14.1.3):
+* The maximum number of write/erase cycles for Non volatile Memory bits is 100. this includes
+* Lock Bits (LOCKx), General Purpose NVM bits (GPNVMx) and the Security Bit.
+*/
+static int at91sam7_handle_gpnvm_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+{
+ flash_bank_t *bank;
+ int bit;
+ uint8_t flashcmd;
+ uint32_t status;
+ at91sam7_flash_bank_t *at91sam7_info;
+ int retval;
+
+ if (argc != 2)
+ {
+ command_print(cmd_ctx, "at91sam7 gpnvm <bit> <set | clear>");
+ return ERROR_OK;
+ }
+
+ bank = get_flash_bank_by_num_noprobe(0);
+ if (bank == NULL)
+ {
+ return ERROR_FLASH_BANK_INVALID;
+ }
+ if (bank->driver != &at91sam7_flash)
+ {
+ command_print(cmd_ctx, "not an at91sam7 flash bank '%s'", args[0]);
+ return ERROR_FLASH_BANK_INVALID;
+ }
+ if (bank->target->state != TARGET_HALTED)
+ {
+ LOG_ERROR("target has to be halted to perform flash operation");
+ return ERROR_TARGET_NOT_HALTED;
+ }
+
+ if (strcmp(args[1], "set") == 0)
+ {
+ flashcmd = SGPB;
+ }
+ else if (strcmp(args[1], "clear") == 0)
+ {
+ flashcmd = CGPB;
+ }
+ else
+ {
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
+
+ at91sam7_info = bank->driver_priv;
+ if (at91sam7_info->cidr == 0)
+ {
+ retval = at91sam7_read_part_info(bank);
+ if (retval != ERROR_OK)
+ {
+ return retval;
+ }
+ }
+
+ bit = atoi(args[0]);
+ if ((bit < 0) || (bit >= at91sam7_info->num_nvmbits))
+ {
+ command_print(cmd_ctx, "gpnvm bit '#%s' is out of bounds for target %s", args[0], at91sam7_info->target_name);
+ return ERROR_OK;
+ }
+
+ /* Configure the flash controller timing */
+ at91sam7_read_clock_info(bank);
+ at91sam7_set_flash_mode(bank, FMR_TIMING_NVBITS);
+
+ if (at91sam7_flash_command(bank, flashcmd, bit) != ERROR_OK)
+ {
+ return ERROR_FLASH_OPERATION_FAILED;
+ }
+
+ /* GPNVM and SECURITY bits apply only for MC_FSR of EFC0 */
+ status = at91sam7_get_flash_status(bank->target, 0);
+ LOG_DEBUG("at91sam7_handle_gpnvm_command: cmd 0x%x, value %d, status 0x%" PRIx32 " \n", flashcmd, bit, status);
+
+ /* check protect state */
+ at91sam7_protect_check(bank);
+
+ return ERROR_OK;
+}
projects / fw / openocd / blobdiff