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CORTEX A8: Fix broken CPU identification 

This patch fixes the issue where the OMAP CPU (and possibly others) was mistaken
for iMX51 and therefore had misadjusted debug base.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
__archive__
Marek Vasut 2010-12-30 04:54:24 +01:00 committed by Øyvind Harboe
parent 50e79d60ce
commit 0136977c40
1 changed files with 17 additions and 3 deletions
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20
src/target/arm_adi_v5.c
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@ -1013,10 +1013,11 @@ is_dap_cid_ok(uint32_t cid3, uint32_t cid2, uint32_t cid1, uint32_t cid0)
struct broken_cpu {
uint32_t dbgbase;
uint32_t apid;
uint32_t idcode;
uint32_t correct_dbgbase;
char *model;
} broken_cpus[] = {
{ 0x80000000, 0x04770002, 0x60000000, "imx51" },
{ 0x80000000, 0x04770002, 0x1ba00477, 0x60000000, "imx51" },
};
int dap_get_debugbase(struct adiv5_dap *dap, int apsel,
@ -1025,7 +1026,7 @@ int dap_get_debugbase(struct adiv5_dap *dap, int apsel,
uint32_t apselold;
int retval;
unsigned int i;
uint32_t dbgbase, apid;
uint32_t dbgbase, apid, idcode;
/* AP address is in bits 31:24 of DP_SELECT */
if (apsel >= 256)
@ -1044,10 +1045,23 @@ int dap_get_debugbase(struct adiv5_dap *dap, int apsel,
if (retval != ERROR_OK)
return retval;
/* Excavate the device ID code */
struct jtag_tap *tap = dap->jtag_info->tap;
while (tap != NULL) {
if (tap->hasidcode) {
idcode = tap->idcode;
break;
}
tap = tap->next_tap;
}
if (tap == NULL || !tap->hasidcode)
return ERROR_OK;
/* Some CPUs are messed up, so fixup if needed. */
for (i = 0; i < sizeof(broken_cpus)/sizeof(struct broken_cpu); i++)
if (broken_cpus[i].dbgbase == dbgbase &&
broken_cpus[i].apid == apid) {
broken_cpus[i].apid == apid &&
broken_cpus[i].idcode == idcode) {
LOG_WARNING("Found broken CPU (%s), trying to fixup "
"ROM Table location from 0x%08x to 0x%08x",
broken_cpus[i].model, dbgbase,