diff options
Diffstat (limited to 'src/soc/intel/meteorlake/crashlog.c')
| -rw-r--r-- | src/soc/intel/meteorlake/crashlog.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/src/soc/intel/meteorlake/crashlog.c b/src/soc/intel/meteorlake/crashlog.c index 219c7e8256..9d3c5d60e4 100644 --- a/src/soc/intel/meteorlake/crashlog.c +++ b/src/soc/intel/meteorlake/crashlog.c @@ -12,6 +12,8 @@ #include <soc/pci_devs.h> #include <string.h> +#define CRASHLOG_CONSUMED_MASK BIT(31) + /* global crashLog info */ static bool m_pmc_crashLog_support; static bool m_pmc_crashLog_present; @@ -364,6 +366,11 @@ static u32 get_disc_table_offset(void) return offset; } +static bool is_crashlog_data_valid(u32 dw0) +{ + return (dw0 != 0x0 && dw0 != INVALID_CRASHLOG_RECORD); +} + static bool cpu_cl_gen_discovery_table(void) { u32 bar_addr = 0, disc_tab_addr = 0; @@ -373,6 +380,11 @@ static bool cpu_cl_gen_discovery_table(void) return false; disc_tab_addr = bar_addr + get_disc_table_offset(); + + u32 dw0 = read32((u32 *)disc_tab_addr); + if (!is_crashlog_data_valid(dw0)) + return false; + memset(&cpu_cl_disc_tab, 0, sizeof(cpu_crashlog_discovery_table_t)); cpu_cl_disc_tab.header.data = ((u64)read32((u32 *)disc_tab_addr) + ((u64)read32((u32 *)(disc_tab_addr + 4)) << 32)); @@ -381,7 +393,18 @@ static bool cpu_cl_gen_discovery_table(void) int cur_offset = 0; for (int i = 0; i < cpu_cl_disc_tab.header.fields.count; i++) { - cur_offset = 8 + 24*i; + cur_offset = 8 + 24 * i; + + dw0 = read32((u32 *)disc_tab_addr + cur_offset); + if (!is_crashlog_data_valid(dw0)) + continue; + + if (dw0 & CRASHLOG_CONSUMED_MASK) { + printk(BIOS_DEBUG, "cpu crashlog records already consumed." + "id: 0x%x dw0: 0x%x\n", i, dw0); + break; + } + cpu_cl_disc_tab.buffers[i].data = ((u64)read32((u32 *)(disc_tab_addr + cur_offset)) + ((u64)read32((u32 *) (disc_tab_addr + cur_offset + 4)) << 32)); |