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SAM D20 MBIST shouldn't fail silently

This commit is contained in:
Richard Eoin Meadows 2014-08-22 22:15:20 +01:00 committed by Gareth McMullin
parent 39a0b064af
commit f4474557d0
1 changed files with 12 additions and 2 deletions
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14
src/samd20.c
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@ -124,7 +124,9 @@ static const char samd20_xml_memory_map[] = "<?xml version=\"1.0\"?>"
#define SAMD20_CTRL_CHIP_ERASE (1 << 4) #define SAMD20_CTRL_CHIP_ERASE (1 << 4)
#define SAMD20_CTRL_MBIST (1 << 3) #define SAMD20_CTRL_MBIST (1 << 3)
#define SAMD20_CTRL_CRC (1 << 2) #define SAMD20_CTRL_CRC (1 << 2)
#define SAMD20_STATUSA_PERR (1 << 12)
#define SAMD20_STATUSA_FAIL (1 << 11) #define SAMD20_STATUSA_FAIL (1 << 11)
#define SAMD20_STATUSA_BERR (1 << 10)
#define SAMD20_STATUSA_CRSTEXT (1 << 9) #define SAMD20_STATUSA_CRSTEXT (1 << 9)
#define SAMD20_STATUSA_DONE (1 << 8) #define SAMD20_STATUSA_DONE (1 << 8)
@ -605,12 +607,20 @@ static bool samd20_cmd_mbist(target *t)
adiv5_ap_mem_write(ap, SAMD20_DSU_CTRLSTAT, SAMD20_CTRL_MBIST); adiv5_ap_mem_write(ap, SAMD20_DSU_CTRLSTAT, SAMD20_CTRL_MBIST);
/* Poll for DSU Ready */ /* Poll for DSU Ready */
while ((adiv5_ap_mem_read(ap, SAMD20_DSU_CTRLSTAT) & SAMD20_STATUSA_DONE) == 0) uint32_t status;
while (((status = adiv5_ap_mem_read(ap, SAMD20_DSU_CTRLSTAT)) &
(SAMD20_STATUSA_DONE | SAMD20_STATUSA_PERR | SAMD20_STATUSA_FAIL)) == 0)
if(target_check_error(t)) if(target_check_error(t))
return false; return false;
/* Test the protection error bit in Status A */
if (status & SAMD20_STATUSA_PERR) {
gdb_outf("MBIST not run due to protection error.\n")
return true;
}
/* Test the fail bit in Status A */ /* Test the fail bit in Status A */
if (adiv5_ap_mem_read(ap, SAMD20_DSU_CTRLSTAT) & SAMD20_STATUSA_FAIL) { if (status & SAMD20_STATUSA_FAIL) {
gdb_outf("MBIST Fail @ 0x%08x\n", gdb_outf("MBIST Fail @ 0x%08x\n",
adiv5_ap_mem_read(ap, SAMD20_DSU_ADDRESS)); adiv5_ap_mem_read(ap, SAMD20_DSU_ADDRESS));
} else { } else {