From 5949a3b3a55d987008b63b80af42c08601babb75 Mon Sep 17 00:00:00 2001 From: David Brownell Date: Tue, 1 Dec 2009 00:49:11 -0800 Subject: Cortex-A8: remove previous mcr()/mrc() methods We don't need this code, now that the DPM code handles it. Neither do we need the ARMv7-A CP15 operations; remove their remnants too. And disable a mostly-needless diagnostic. Signed-off-by: David Brownell --- src/target/armv7a.h | 7 ---- src/target/cortex_a8.c | 98 +------------------------------------------------- 2 files changed, 1 insertion(+), 104 deletions(-) (limited to 'src') diff --git a/src/target/armv7a.h b/src/target/armv7a.h index f843f03b..ee0d2acb 100644 --- a/src/target/armv7a.h +++ b/src/target/armv7a.h @@ -62,13 +62,6 @@ struct armv7a_common /* Cache and Memory Management Unit */ struct armv4_5_mmu_common armv4_5_mmu; - int (*read_cp15)(struct target *target, - uint32_t op1, uint32_t op2, - uint32_t CRn, uint32_t CRm, uint32_t *value); - int (*write_cp15)(struct target *target, - uint32_t op1, uint32_t op2, - uint32_t CRn, uint32_t CRm, uint32_t value); - int (*examine_debug_reason)(struct target *target); void (*post_debug_entry)(struct target *target); diff --git a/src/target/cortex_a8.c b/src/target/cortex_a8.c index 9ce6b2ba..e312e547 100644 --- a/src/target/cortex_a8.c +++ b/src/target/cortex_a8.c @@ -159,97 +159,6 @@ static int cortex_a8_read_regs_through_mem(struct target *target, uint32_t addre return retval; } -static int cortex_a8_read_cp(struct target *target, uint32_t *value, uint8_t CP, - uint8_t op1, uint8_t CRn, uint8_t CRm, uint8_t op2) -{ - int retval; - struct armv7a_common *armv7a = target_to_armv7a(target); - struct swjdp_common *swjdp = &armv7a->swjdp_info; - uint32_t dscr = 0; - - /* MRC(...) to read coprocessor register into r0 */ - cortex_a8_exec_opcode(target, ARMV4_5_MRC(CP, op1, 0, CRn, CRm, op2), - &dscr); - - /* Move R0 to DTRTX */ - cortex_a8_exec_opcode(target, ARMV4_5_MCR(14, 0, 0, 0, 5, 0), - &dscr); - - /* Read DCCTX */ - retval = mem_ap_read_atomic_u32(swjdp, - armv7a->debug_base + CPUDBG_DTRTX, value); - - return retval; -} - -static int cortex_a8_write_cp(struct target *target, uint32_t value, - uint8_t CP, uint8_t op1, uint8_t CRn, uint8_t CRm, uint8_t op2) -{ - int retval; - uint32_t dscr; - struct armv7a_common *armv7a = target_to_armv7a(target); - struct swjdp_common *swjdp = &armv7a->swjdp_info; - - LOG_DEBUG("CP%i, CRn %i, value 0x%08" PRIx32, CP, CRn, value); - - /* Check that DCCRX is not full */ - retval = mem_ap_read_atomic_u32(swjdp, - armv7a->debug_base + CPUDBG_DSCR, &dscr); - if (dscr & (1 << DSCR_DTR_RX_FULL)) - { - LOG_ERROR("DSCR_DTR_RX_FULL, dscr 0x%08" PRIx32, dscr); - /* Clear DCCRX with MCR(p14, 0, Rd, c0, c5, 0), opcode 0xEE000E15 */ - cortex_a8_exec_opcode(target, ARMV4_5_MRC(14, 0, 0, 0, 5, 0), - &dscr); - } - - /* Write DTRRX ... sets DSCR.DTRRXfull but exec_opcode() won't care */ - retval = mem_ap_write_u32(swjdp, - armv7a->debug_base + CPUDBG_DTRRX, value); - - /* Move DTRRX to r0 */ - cortex_a8_exec_opcode(target, ARMV4_5_MRC(14, 0, 0, 0, 5, 0), &dscr); - - /* MCR(...) to write r0 to coprocessor */ - return cortex_a8_exec_opcode(target, - ARMV4_5_MCR(CP, op1, 0, CRn, CRm, op2), - &dscr); -} - -static int cortex_a8_read_cp15(struct target *target, uint32_t op1, uint32_t op2, - uint32_t CRn, uint32_t CRm, uint32_t *value) -{ - return cortex_a8_read_cp(target, value, 15, op1, CRn, CRm, op2); -} - -static int cortex_a8_write_cp15(struct target *target, uint32_t op1, uint32_t op2, - uint32_t CRn, uint32_t CRm, uint32_t value) -{ - return cortex_a8_write_cp(target, value, 15, op1, CRn, CRm, op2); -} - -static int cortex_a8_mrc(struct target *target, int cpnum, uint32_t op1, uint32_t op2, uint32_t CRn, uint32_t CRm, uint32_t *value) -{ - if (cpnum!=15) - { - LOG_ERROR("Only cp15 is supported"); - return ERROR_FAIL; - } - return cortex_a8_read_cp15(target, op1, op2, CRn, CRm, value); -} - -static int cortex_a8_mcr(struct target *target, int cpnum, uint32_t op1, uint32_t op2, uint32_t CRn, uint32_t CRm, uint32_t value) -{ - if (cpnum!=15) - { - LOG_ERROR("Only cp15 is supported"); - return ERROR_FAIL; - } - return cortex_a8_write_cp15(target, op1, op2, CRn, CRm, value); -} - - - static int cortex_a8_dap_read_coreregister_u32(struct target *target, uint32_t *value, int regnum) { @@ -421,7 +330,7 @@ static int cortex_a8_read_dcc(struct cortex_a8_common *a8, uint32_t *data, retval = mem_ap_read_atomic_u32(swjdp, a8->armv7a_common.debug_base + CPUDBG_DTRTX, data); - LOG_DEBUG("read DCC 0x%08" PRIx32, *data); + //LOG_DEBUG("read DCC 0x%08" PRIx32, *data); if (dscr_p) *dscr_p = dscr; @@ -1612,9 +1521,6 @@ static int cortex_a8_init_arch_info(struct target *target, cortex_a8->common_magic = CORTEX_A8_COMMON_MAGIC; armv4_5->arch_info = armv7a; - armv4_5->mrc = cortex_a8_mrc, - armv4_5->mcr = cortex_a8_mcr, - /* prepare JTAG information for the new target */ cortex_a8->jtag_info.tap = tap; cortex_a8->jtag_info.scann_size = 4; @@ -1645,8 +1551,6 @@ static int cortex_a8_init_arch_info(struct target *target, // armv7a->armv4_5_mmu.enable_mmu_caches = armv7a_enable_mmu_caches; armv7a->armv4_5_mmu.has_tiny_pages = 1; armv7a->armv4_5_mmu.mmu_enabled = 0; - armv7a->read_cp15 = cortex_a8_read_cp15; - armv7a->write_cp15 = cortex_a8_write_cp15; // arm7_9->handle_target_request = cortex_a8_handle_target_request; -- cgit v1.2.3