+++ /dev/null
-/*
- * Copyright © 2011 Anthony Towns <aj@erisian.com.au>
- *
- * 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.
- */
-
-#include "ao.h"
-#include "cc1111.h"
-
-#define ENDOFCODE (CODESIZE)
-#define AO_INTFLASH_BLOCK 1024
-#define AO_INTFLASH_BLOCKS ((0x8000 - ENDOFCODE)/AO_INTFLASH_BLOCK)
-#define AO_INTFLASH_SIZE (AO_INTFLASH_BLOCK * AO_INTFLASH_BLOCKS)
-#define AO_INTFLASH_LOCATION (0x8000 - AO_INTFLASH_SIZE)
-
-/*
- * 21000 * 24e6
- * FWT = ------------
- * 16e9
- *
- * = 31.5
- *
- * Round up and use 32
- */
-
-#define FLASH_TIMING 0x20
-
-#if AO_INTFLASH_BLOCKS < 2
-#error "Too few pages"
-#endif
-
-#if AO_INFTLASH_LOCATION % 1024 != 0
-#error "Pages aren't aligned properly"
-#endif
-
-__xdata __at(AO_INTFLASH_LOCATION) uint8_t ao_intflash[AO_INTFLASH_SIZE];
-
-/* Total bytes of available storage */
-__pdata uint32_t ao_storage_total = sizeof(ao_intflash);
-
-/* Block size - device is erased in these units. */
-__pdata uint32_t ao_storage_block = AO_INTFLASH_BLOCK;
-
-/* Byte offset of config block. Will be ao_storage_block bytes long */
-__pdata uint32_t ao_storage_config = sizeof(ao_intflash) - AO_INTFLASH_BLOCK;
-
-/* Storage unit size - device reads and writes must be within blocks of this size. */
-__pdata uint16_t ao_storage_unit = AO_INTFLASH_BLOCK;
-
-__xdata static uint8_t ao_intflash_dma_done;
-static uint8_t ao_intflash_dma;
-
-/*
- * The internal flash chip is arranged in 1kB sectors; the
- * chip cannot erase in units smaller than that.
- *
- * Writing happens in units of 2 bytes and
- * can only change bits from 1 to 0. So, you can rewrite
- * the same contents, or append to an existing page easily enough
- */
-
-/*
- * Erase the specified sector
- */
-uint8_t
-ao_storage_erase(uint32_t pos) __reentrant
-{
- uint16_t addr;
-
- if (pos >= ao_storage_total || pos + ao_storage_block > ao_storage_total)
- return 0;
-
- addr = ((uint16_t)(ao_intflash + pos) >> 1);
-
- FADDRH = addr >> 8;
- FADDRL = addr;
-
- __critical {
- _asm
- .even
- orl _FCTL, #FCTL_ERASE; ; FCTL |= FCTL_ERASE
- nop ; Required, see datasheet.
- _endasm;
- }
-
- return 1;
-}
-
-/*
- * Write to flash
- */
-
-static void
-ao_intflash_write_aligned(uint16_t pos, __xdata void *d, uint16_t len) __reentrant
-{
- pos = ((uint16_t) ao_intflash + pos) >> 1;
-
- ao_dma_set_transfer(ao_intflash_dma,
- d,
- &FWDATAXADDR,
- len,
- DMA_CFG0_WORDSIZE_8 |
- DMA_CFG0_TMODE_SINGLE |
- DMA_CFG0_TRIGGER_FLASH,
- DMA_CFG1_SRCINC_1 |
- DMA_CFG1_DESTINC_0 |
- DMA_CFG1_PRIORITY_HIGH);
-
- FADDRH = pos >> 8;
- FADDRL = pos;
-
- ao_dma_start(ao_intflash_dma);
-
- __critical {
- _asm
- .even
- orl _FCTL, #FCTL_WRITE; ; FCTL |= FCTL_WRITE
- nop
- _endasm;
- }
- __critical while (!ao_intflash_dma_done)
- ao_sleep(&ao_intflash_dma_done);
-}
-
-static void
-ao_intflash_write_byte(uint16_t pos, uint8_t byte) __reentrant
-{
- static __xdata uint8_t b[2];
-
- if (pos & 1) {
- b[0] = 0xff;
- b[1] = byte;
- } else {
- b[0] = byte;
- b[1] = 0xff;
- }
- ao_intflash_write_aligned(pos, b, 2);
-}
-
-uint8_t
-ao_storage_device_write(uint32_t pos32, __xdata void *v, uint16_t len) __reentrant
-{
- uint16_t pos = pos32;
- __xdata uint8_t *d = v;
- uint8_t oddlen;
-
- if (pos >= ao_storage_total || pos + len > ao_storage_total)
- return 0;
- if (len == 0)
- return 1;
-
- if (pos & 1) {
- ao_intflash_write_byte(pos++, *d++);
- len--;
- }
- oddlen = len & 1;
- len -= oddlen;
- if (len)
- ao_intflash_write_aligned(pos, d, len);
- if (oddlen)
- ao_intflash_write_byte(pos + len, d[len]);
-
- return 1;
-}
-
-/*
- * Read from flash
- */
-uint8_t
-ao_storage_device_read(uint32_t pos, __xdata void *d, uint16_t len) __reentrant
-{
- if (pos >= ao_storage_total || pos + len > ao_storage_total)
- return 0;
- ao_xmemcpy(d, ao_intflash+pos, len);
- return 1;
-}
-
-void
-ao_storage_flush(void) __reentrant
-{
-}
-
-void
-ao_storage_setup(void)
-{
-}
-
-void
-ao_storage_device_info(void) __reentrant
-{
- printf ("Using internal flash, starting at 0x%04x\n", AO_INTFLASH_LOCATION);
-}
-
-void
-ao_storage_device_init(void)
-{
- ao_intflash_dma = ao_dma_alloc(&ao_intflash_dma_done);
-
- FWT = FLASH_TIMING;
-}
projects / fw / altos / blobdiff