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arm920t: add mrcmcr interface fn's. 

The arm920t has a concept of read modify write cycles
that may have to be represented in the mrcmcr interface
eventually.

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
This commit is contained in:
Øyvind Harboe 2009-11-03 12:54:26 +01:00
parent dc98c64d71
commit 0f3117c19d
1 changed files with 29 additions and 0 deletions
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29
src/target/arm920t.c
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@ -46,6 +46,10 @@ int arm920t_init_target(struct command_context_s *cmd_ctx, struct target_s *targ
#define ARM920T_CP15_PHYS_ADDR(x, y, z) ((x << 5) | (y << 1) << (z)) #define ARM920T_CP15_PHYS_ADDR(x, y, z) ((x << 5) | (y << 1) << (z))
static int arm920t_mrc(target_t *target, int cpnum, uint32_t op1, uint32_t op2, uint32_t CRn, uint32_t CRm, uint32_t *value);
static int arm920t_mcr(target_t *target, int cpnum, uint32_t op1, uint32_t op2, uint32_t CRn, uint32_t CRm, uint32_t value);
target_type_t arm920t_target = target_type_t arm920t_target =
{ {
.name = "arm920t", .name = "arm920t",
@ -84,6 +88,8 @@ target_type_t arm920t_target =
.target_create = arm920t_target_create, .target_create = arm920t_target_create,
.init_target = arm920t_init_target, .init_target = arm920t_init_target,
.examine = arm9tdmi_examine, .examine = arm9tdmi_examine,
.mrc = arm920t_mrc,
.mcr = arm920t_mcr,
}; };
int arm920t_read_cp15_physical(target_t *target, int reg_addr, uint32_t *value) int arm920t_read_cp15_physical(target_t *target, int reg_addr, uint32_t *value)
@ -1407,3 +1413,26 @@ int arm920t_handle_cache_info_command(struct command_context_s *cmd_ctx, char *c
return armv4_5_handle_cache_info_command(cmd_ctx, &arm920t->armv4_5_mmu.armv4_5_cache); return armv4_5_handle_cache_info_command(cmd_ctx, &arm920t->armv4_5_mmu.armv4_5_cache);
} }
static int arm920t_mrc(target_t *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 arm920t_read_cp15_interpreted(target, mrc_opcode(cpnum, op1, op2, CRn, CRm), 0, value);
}
static int arm920t_mcr(target_t *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 arm920t_write_cp15_interpreted(target, mrc_opcode(cpnum, op1, op2, CRn, CRm), 0, value);
}