--- /dev/null
+/***************************************************************************
+ * Copyright (C) 2009 by Paulius Zaleckas *
+ * paulius.zaleckas@gmail.com *
+ * *
+ * 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. *
+ ***************************************************************************/
+
+/*
+ * FA526 is very similar to ARM920T with following differences:
+ *
+ * - execution pipeline is 6 steps
+ * - Unified TLB
+ * - has Branch Target Buffer
+ * - does not support reading of I/D cache contents
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "arm920t.h"
+#include "target_type.h"
+
+int fa526_target_create(struct target_s *target, Jim_Interp *interp);
+int fa526_init_target(struct command_context_s *cmd_ctx, struct target_s *target);
+int fa526_quit(void);
+
+target_type_t fa526_target =
+{
+ .name = "fa526",
+
+ .poll = arm7_9_poll,
+ .arch_state = arm920t_arch_state,
+
+ .target_request_data = arm7_9_target_request_data,
+
+ .halt = arm7_9_halt,
+ .resume = arm7_9_resume,
+ .step = arm7_9_step,
+
+ .assert_reset = arm7_9_assert_reset,
+ .deassert_reset = arm7_9_deassert_reset,
+ .soft_reset_halt = arm920t_soft_reset_halt,
+
+ .get_gdb_reg_list = armv4_5_get_gdb_reg_list,
+
+ .read_memory = arm920t_read_memory,
+ .write_memory = arm920t_write_memory,
+ .bulk_write_memory = arm7_9_bulk_write_memory,
+ .checksum_memory = arm7_9_checksum_memory,
+ .blank_check_memory = arm7_9_blank_check_memory,
+
+ .run_algorithm = armv4_5_run_algorithm,
+
+ .add_breakpoint = arm7_9_add_breakpoint,
+ .remove_breakpoint = arm7_9_remove_breakpoint,
+ .add_watchpoint = arm7_9_add_watchpoint,
+ .remove_watchpoint = arm7_9_remove_watchpoint,
+
+ .register_commands = arm920t_register_commands,
+ .target_create = fa526_target_create,
+ .init_target = fa526_init_target,
+ .examine = arm9tdmi_examine,
+ .quit = fa526_quit
+};
+
+void fa526_change_to_arm(target_t *target, uint32_t *r0, uint32_t *pc)
+{
+ LOG_ERROR("%s: there is no Thumb state on FA526", __func__);
+}
+
+void fa526_read_core_regs(target_t *target, uint32_t mask, uint32_t* core_regs[16])
+{
+ int i;
+ /* get pointers to arch-specific information */
+ armv4_5_common_t *armv4_5 = target->arch_info;
+ arm7_9_common_t *arm7_9 = armv4_5->arch_info;
+ arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+
+ /* STMIA r0-15, [r0] at debug speed
+ * register values will start to appear on 4th DCLK
+ */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_STMIA(0, mask & 0xffff, 0, 0), 0, NULL, 0);
+
+ /* fetch NOP, STM in DECODE stage */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* fetch NOP, STM in SHIFT stage */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* fetch NOP, STM in EXECUTE stage (1st cycle) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+
+ for (i = 0; i <= 15; i++)
+ {
+ if (mask & (1 << i))
+ /* nothing fetched, STM in MEMORY (i'th cycle) */
+ arm9tdmi_clock_data_in(jtag_info, core_regs[i]);
+ }
+}
+
+void fa526_read_core_regs_target_buffer(target_t *target, uint32_t mask, void* buffer, int size)
+{
+ int i;
+ /* get pointers to arch-specific information */
+ armv4_5_common_t *armv4_5 = target->arch_info;
+ arm7_9_common_t *arm7_9 = armv4_5->arch_info;
+ arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+ int be = (target->endianness == TARGET_BIG_ENDIAN) ? 1 : 0;
+ uint32_t *buf_u32 = buffer;
+ uint16_t *buf_u16 = buffer;
+ uint8_t *buf_u8 = buffer;
+
+ /* STMIA r0-15, [r0] at debug speed
+ * register values will start to appear on 4th DCLK
+ */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_STMIA(0, mask & 0xffff, 0, 0), 0, NULL, 0);
+
+ /* fetch NOP, STM in DECODE stage */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* fetch NOP, STM in SHIFT stage */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* fetch NOP, STM in EXECUTE stage (1st cycle) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+
+ for (i = 0; i <= 15; i++)
+ {
+ if (mask & (1 << i))
+ /* nothing fetched, STM in MEMORY (i'th cycle) */
+ switch (size)
+ {
+ case 4:
+ arm9tdmi_clock_data_in_endianness(jtag_info, buf_u32++, 4, be);
+ break;
+ case 2:
+ arm9tdmi_clock_data_in_endianness(jtag_info, buf_u16++, 2, be);
+ break;
+ case 1:
+ arm9tdmi_clock_data_in_endianness(jtag_info, buf_u8++, 1, be);
+ break;
+ }
+ }
+}
+
+void fa526_read_xpsr(target_t *target, uint32_t *xpsr, int spsr)
+{
+ /* get pointers to arch-specific information */
+ armv4_5_common_t *armv4_5 = target->arch_info;
+ arm7_9_common_t *arm7_9 = armv4_5->arch_info;
+ arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+
+ /* MRS r0, cpsr */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_MRS(0, spsr & 1), 0, NULL, 0);
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+
+ /* STR r0, [r15] */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_STR(0, 15), 0, NULL, 0);
+ /* fetch NOP, STR in DECODE stage */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* fetch NOP, STR in SHIFT stage */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* fetch NOP, STR in EXECUTE stage (1st cycle) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* nothing fetched, STR in MEMORY */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, xpsr, 0);
+}
+
+void fa526_write_xpsr(target_t *target, uint32_t xpsr, int spsr)
+{
+ /* get pointers to arch-specific information */
+ armv4_5_common_t *armv4_5 = target->arch_info;
+ arm7_9_common_t *arm7_9 = armv4_5->arch_info;
+ arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+
+ LOG_DEBUG("xpsr: %8.8x, spsr: %i", xpsr, spsr);
+
+ /* MSR1 fetched */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_MSR_IM(xpsr & 0xff, 0, 1, spsr), 0, NULL, 0);
+ /* MSR2 fetched, MSR1 in DECODE */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_MSR_IM((xpsr & 0xff00) >> 8, 0xc, 2, spsr), 0, NULL, 0);
+ /* MSR3 fetched, MSR1 in SHIFT, MSR2 in DECODE */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_MSR_IM((xpsr & 0xff0000) >> 16, 0x8, 4, spsr), 0, NULL, 0);
+ /* MSR4 fetched, MSR1 in EXECUTE (1), MSR2 in SHIFT, MSR3 in DECODE */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_MSR_IM((xpsr & 0xff000000) >> 24, 0x4, 8, spsr), 0, NULL, 0);
+ /* nothing fetched, MSR1 in EXECUTE (2) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* nothing fetched, MSR1 in EXECUTE (3) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* nothing fetched, MSR2 in EXECUTE (1), MSR3 in SHIFT, MSR4 in DECODE */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* nothing fetched, MSR2 in EXECUTE (2) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* nothing fetched, MSR2 in EXECUTE (3) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* NOP fetched, MSR3 in EXECUTE (1), MSR4 in SHIFT */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* nothing fetched, MSR3 in EXECUTE (2) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* nothing fetched, MSR3 in EXECUTE (3) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* NOP fetched, MSR4 in EXECUTE (1) */
+ /* last MSR writes flags, which takes only one cycle */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+}
+
+void fa526_write_xpsr_im8(target_t *target, uint8_t xpsr_im, int rot, int spsr)
+{
+ /* get pointers to arch-specific information */
+ armv4_5_common_t *armv4_5 = target->arch_info;
+ arm7_9_common_t *arm7_9 = armv4_5->arch_info;
+ arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+
+ LOG_DEBUG("xpsr_im: %2.2x, rot: %i, spsr: %i", xpsr_im, rot, spsr);
+
+ /* MSR fetched */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_MSR_IM(xpsr_im, rot, 1, spsr), 0, NULL, 0);
+ /* NOP fetched, MSR in DECODE */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* NOP fetched, MSR in SHIFT */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* NOP fetched, MSR in EXECUTE (1) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+
+ /* rot == 4 writes flags, which takes only one cycle */
+ if (rot != 4)
+ {
+ /* nothing fetched, MSR in EXECUTE (2) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* nothing fetched, MSR in EXECUTE (3) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ }
+}
+
+void fa526_write_core_regs(target_t *target, uint32_t mask, uint32_t core_regs[16])
+{
+ int i;
+ /* get pointers to arch-specific information */
+ armv4_5_common_t *armv4_5 = target->arch_info;
+ arm7_9_common_t *arm7_9 = armv4_5->arch_info;
+ arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+
+ /* LDMIA r0-15, [r0] at debug speed
+ * register values will start to appear on 4th DCLK
+ */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_LDMIA(0, mask & 0xffff, 0, 0), 0, NULL, 0);
+
+ /* fetch NOP, LDM in DECODE stage */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* fetch NOP, LDM in SHIFT stage */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* fetch NOP, LDM in EXECUTE stage (1st cycle) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+
+ for (i = 0; i <= 15; i++)
+ {
+ if (mask & (1 << i))
+ /* nothing fetched, LDM still in EXECUTE (1+i cycle) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, core_regs[i], NULL, 0);
+ }
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+}
+
+void fa526_write_pc(target_t *target, uint32_t pc)
+{
+ /* get pointers to arch-specific information */
+ armv4_5_common_t *armv4_5 = target->arch_info;
+ arm7_9_common_t *arm7_9 = armv4_5->arch_info;
+ arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+
+ /* LDMIA r0-15, [r0] at debug speed
+ * register values will start to appear on 4th DCLK
+ */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_LDMIA(0, 0x8000, 0, 0), 0, NULL, 0);
+
+ /* fetch NOP, LDM in DECODE stage */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* fetch NOP, LDM in SHIFT stage */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* fetch NOP, LDM in EXECUTE stage (1st cycle) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* nothing fetched, LDM in EXECUTE stage (2nd cycle) (output data) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, pc, NULL, 0);
+ /* nothing fetched, LDM in EXECUTE stage (3rd cycle) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* fetch NOP, LDM in EXECUTE stage (4th cycle) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* fetch NOP, LDM in EXECUTE stage (5th cycle) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+}
+
+void fa526_branch_resume_thumb(target_t *target)
+{
+ LOG_ERROR("%s: there is no Thumb state on FA526", __func__);
+}
+
+int fa526_init_arch_info_2(target_t *target, arm9tdmi_common_t *arm9tdmi, jtag_tap_t *tap)
+{
+ armv4_5_common_t *armv4_5;
+ arm7_9_common_t *arm7_9;
+
+ arm7_9 = &arm9tdmi->arm7_9_common;
+ armv4_5 = &arm7_9->armv4_5_common;
+
+ /* prepare JTAG information for the new target */
+ arm7_9->jtag_info.tap = tap;
+ arm7_9->jtag_info.scann_size = 5;
+
+ /* register arch-specific functions */
+ arm7_9->examine_debug_reason = arm9tdmi_examine_debug_reason;
+ arm7_9->change_to_arm = fa526_change_to_arm;
+ arm7_9->read_core_regs = fa526_read_core_regs;
+ arm7_9->read_core_regs_target_buffer = fa526_read_core_regs_target_buffer;
+ arm7_9->read_xpsr = fa526_read_xpsr;
+
+ arm7_9->write_xpsr = fa526_write_xpsr;
+ arm7_9->write_xpsr_im8 = fa526_write_xpsr_im8;
+ arm7_9->write_core_regs = fa526_write_core_regs;
+
+ arm7_9->load_word_regs = arm9tdmi_load_word_regs;
+ arm7_9->load_hword_reg = arm9tdmi_load_hword_reg;
+ arm7_9->load_byte_reg = arm9tdmi_load_byte_reg;
+
+ arm7_9->store_word_regs = arm9tdmi_store_word_regs;
+ arm7_9->store_hword_reg = arm9tdmi_store_hword_reg;
+ arm7_9->store_byte_reg = arm9tdmi_store_byte_reg;
+
+ arm7_9->write_pc = fa526_write_pc;
+ arm7_9->branch_resume = arm9tdmi_branch_resume;
+ arm7_9->branch_resume_thumb = fa526_branch_resume_thumb;
+
+ arm7_9->enable_single_step = arm9tdmi_enable_single_step;
+ arm7_9->disable_single_step = arm9tdmi_disable_single_step;
+
+ arm7_9->pre_debug_entry = NULL;
+ arm7_9->post_debug_entry = NULL;
+
+ arm7_9->pre_restore_context = NULL;
+ arm7_9->post_restore_context = NULL;
+
+ /* initialize arch-specific breakpoint handling */
+ arm7_9->arm_bkpt = 0xdeeedeee;
+ arm7_9->thumb_bkpt = 0xdeee;
+
+ arm7_9->dbgreq_adjust_pc = 3;
+ arm7_9->arch_info = arm9tdmi;
+
+ arm9tdmi->common_magic = ARM9TDMI_COMMON_MAGIC;
+ arm9tdmi->arch_info = NULL;
+
+ arm7_9_init_arch_info(target, arm7_9);
+
+ /* override use of DBGRQ, this is safe on ARM9TDMI */
+ arm7_9->use_dbgrq = 1;
+
+ /* all ARM9s have the vector catch register */
+ arm7_9->has_vector_catch = 1;
+
+ return ERROR_OK;
+}
+
+int fa526_init_arch_info(target_t *target, arm920t_common_t *arm920t, jtag_tap_t *tap)
+{
+ arm9tdmi_common_t *arm9tdmi = &arm920t->arm9tdmi_common;
+ arm7_9_common_t *arm7_9 = &arm9tdmi->arm7_9_common;
+
+ /* initialize arm9tdmi specific info (including arm7_9 and armv4_5)
+ */
+ fa526_init_arch_info_2(target, arm9tdmi, tap);
+
+ arm9tdmi->arch_info = arm920t;
+ arm920t->common_magic = ARM920T_COMMON_MAGIC;
+
+ arm7_9->post_debug_entry = arm920t_post_debug_entry;
+ arm7_9->pre_restore_context = arm920t_pre_restore_context;
+
+ arm920t->armv4_5_mmu.armv4_5_cache.ctype = -1;
+ arm920t->armv4_5_mmu.get_ttb = arm920t_get_ttb;
+ arm920t->armv4_5_mmu.read_memory = arm7_9_read_memory;
+ arm920t->armv4_5_mmu.write_memory = arm7_9_write_memory;
+ arm920t->armv4_5_mmu.disable_mmu_caches = arm920t_disable_mmu_caches;
+ arm920t->armv4_5_mmu.enable_mmu_caches = arm920t_enable_mmu_caches;
+ arm920t->armv4_5_mmu.has_tiny_pages = 1;
+ arm920t->armv4_5_mmu.mmu_enabled = 0;
+
+ /* disabling linefills leads to lockups, so keep them enabled for now
+ * this doesn't affect correctness, but might affect timing issues, if
+ * important data is evicted from the cache during the debug session
+ * */
+ arm920t->preserve_cache = 0;
+
+ /* override hw single-step capability from ARM9TDMI */
+ arm7_9->has_single_step = 1;
+
+ return ERROR_OK;
+}
+
+int fa526_target_create(struct target_s *target, Jim_Interp *interp)
+{
+ arm920t_common_t *arm920t = calloc(1,sizeof(arm920t_common_t));
+
+ fa526_init_arch_info(target, arm920t, target->tap);
+
+ return ERROR_OK;
+}
+
+int fa526_init_target(struct command_context_s *cmd_ctx, struct target_s *target)
+{
+ arm9tdmi_init_target(cmd_ctx, target);
+ return ERROR_OK;
+}
+
+int fa526_quit(void)
+{
+ return ERROR_OK;
+}
projects / fw / openocd / commitdiff