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- added patch to access cp15 register (XScale) 

(thanks to Edgar Grimberg for the patch)

git-svn-id: svn://svn.berlios.de/openocd/trunk@283 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
mifi 2008-02-06 19:59:55 +00:00
parent a34e4b39c4
commit dafa5aacbe
1 changed files with 92 additions and 0 deletions
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92
src/target/xscale.c
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@ -3579,6 +3579,96 @@ int xscale_handle_analyze_trace_buffer_command(struct command_context_s *cmd_ctx
return ERROR_OK; return ERROR_OK;
} }
int xscale_handle_cp15(command_context_t *cmd_ctx, char *cmd, char **args, int argc)
{
target_t *target = get_current_target(cmd_ctx);
armv4_5_common_t *armv4_5;
xscale_common_t *xscale;
if (xscale_get_arch_pointers(target, &armv4_5, &xscale) != ERROR_OK)
{
command_print(cmd_ctx, "target isn't an XScale target");
return ERROR_OK;
}
if (target->state != TARGET_HALTED)
{
command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
return ERROR_OK;
}
u32 reg_no = 0;
reg_t *reg = NULL;
if(argc > 0)
{
reg_no = strtoul(args[0], NULL, 0);
/*translate from xscale cp15 register no to openocd register*/
switch(reg_no)
{
case 0:
reg_no = XSCALE_MAINID;
break;
case 1:
reg_no = XSCALE_CTRL;
break;
case 2:
reg_no = XSCALE_TTB;
break;
case 3:
reg_no = XSCALE_DAC;
break;
case 5:
reg_no = XSCALE_FSR;
break;
case 6:
reg_no = XSCALE_FAR;
break;
case 13:
reg_no = XSCALE_PID;
break;
case 15:
reg_no = XSCALE_CPACCESS;
break;
default:
command_print(cmd_ctx, "invalid register number");
return ERROR_INVALID_ARGUMENTS;
}
reg = &xscale->reg_cache->reg_list[reg_no];
}
if(argc == 1)
{
u32 value;
/* read cp15 control register */
xscale_get_reg(reg);
value = buf_get_u32(reg->value, 0, 32);
command_print(cmd_ctx, "%s (/%i): 0x%x", reg->name, reg->size, value);
}
else if(argc == 2)
{
u32 value = strtoul(args[1], NULL, 0);
/* send CP write request (command 0x41) */
xscale_send_u32(target, 0x41);
/* send CP register number */
xscale_send_u32(target, reg_no);
/* send CP register value */
xscale_send_u32(target, value);
/* execute cpwait to ensure outstanding operations complete */
xscale_send_u32(target, 0x53);
}
else
{
command_print(cmd_ctx, "usage: cp15 [register]<, [value]>");
}
return ERROR_OK;
}
int xscale_register_commands(struct command_context_s *cmd_ctx) int xscale_register_commands(struct command_context_s *cmd_ctx)
{ {
command_t *xscale_cmd; command_t *xscale_cmd;
@ -3603,6 +3693,8 @@ int xscale_register_commands(struct command_context_s *cmd_ctx)
register_command(cmd_ctx, xscale_cmd, "trace_image", xscale_handle_trace_image_command, register_command(cmd_ctx, xscale_cmd, "trace_image", xscale_handle_trace_image_command,
COMMAND_EXEC, "load image from <file> [base address]"); COMMAND_EXEC, "load image from <file> [base address]");
register_command(cmd_ctx, xscale_cmd, "cp15", xscale_handle_cp15, COMMAND_EXEC, "access coproc 15 <register> [value]");
armv4_5_register_commands(cmd_ctx); armv4_5_register_commands(cmd_ctx);
return ERROR_OK; return ERROR_OK;