diff options
Diffstat (limited to 'src/soc/amd/common')
| -rw-r--r-- | src/soc/amd/common/block/acpimmio/Makefile.inc | 2 | ||||
| -rw-r--r-- | src/soc/amd/common/block/acpimmio/print_reset_status.c | 55 | ||||
| -rw-r--r-- | src/soc/amd/common/block/include/amdblocks/acpimmio.h | 4 |
3 files changed, 61 insertions, 0 deletions
diff --git a/src/soc/amd/common/block/acpimmio/Makefile.inc b/src/soc/amd/common/block/acpimmio/Makefile.inc index c93e67d77b..8981231cff 100644 --- a/src/soc/amd/common/block/acpimmio/Makefile.inc +++ b/src/soc/amd/common/block/acpimmio/Makefile.inc @@ -10,4 +10,6 @@ postcar-y += biosram.c ramstage-y += biosram.c smm-y += biosram.c +bootblock-y += print_reset_status.c + endif # CONFIG_SOC_AMD_COMMON_BLOCK_ACPIMMIO diff --git a/src/soc/amd/common/block/acpimmio/print_reset_status.c b/src/soc/amd/common/block/acpimmio/print_reset_status.c new file mode 100644 index 0000000000..3825753f84 --- /dev/null +++ b/src/soc/amd/common/block/acpimmio/print_reset_status.c @@ -0,0 +1,55 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <console/console.h> +#include <amdblocks/acpimmio.h> + +static void print_num_status_bits(int num_bits, uint32_t status, + const char *const bit_names[]) +{ + int i; + + if (!status) + return; + + for (i = num_bits - 1; i >= 0; i--) { + if (status & (1 << i)) { + if (bit_names[i]) + printk(BIOS_DEBUG, "%s ", bit_names[i]); + else + printk(BIOS_DEBUG, "BIT%d ", i); + } + } +} + +void fch_print_pmxc0_status(void) +{ + /* PMxC0 S5/Reset Status shows the source of previous reset. */ + uint32_t pmxc0_status = pm_read32(PM_RST_STATUS); + + static const char *const pmxc0_status_bits[32] = { + [0] = "ThermalTrip", + [1] = "FourSecondPwrBtn", + [2] = "Shutdown", + [3] = "ThermalTripFromTemp", + [4] = "RemotePowerDownFromASF", + [5] = "ShutDownFan0", + [16] = "UserRst", + [17] = "SoftPciRst", + [18] = "DoInit", + [19] = "DoReset", + [20] = "DoFullReset", + [21] = "SleepReset", + [22] = "KbReset", + [23] = "LtReset", + [24] = "FailBootRst", + [25] = "WatchdogIssueReset", + [26] = "RemoteResetFromASF", + [27] = "SyncFlood", + [28] = "HangReset", + [29] = "EcWatchdogRst", + }; + + printk(BIOS_DEBUG, "PMxC0 STATUS: 0x%x ", pmxc0_status); + print_num_status_bits(ARRAY_SIZE(pmxc0_status_bits), pmxc0_status, pmxc0_status_bits); + printk(BIOS_DEBUG, "\n"); +} diff --git a/src/soc/amd/common/block/include/amdblocks/acpimmio.h b/src/soc/amd/common/block/include/amdblocks/acpimmio.h index 0e42ee60c3..4fcaa9204a 100644 --- a/src/soc/amd/common/block/include/amdblocks/acpimmio.h +++ b/src/soc/amd/common/block/include/amdblocks/acpimmio.h @@ -20,6 +20,7 @@ #define SMBUS_ASF_IO_EN (1 << 4) #define CF9_IO_EN (1 << 1) #define LEGACY_IO_EN (1 << 0) +#define PM_RST_STATUS 0xc0 /* * Earlier devices enable the ACPIMMIO bank decodes in PMx24. All discrete FCHs @@ -85,6 +86,9 @@ void pm_io_write8(uint8_t reg, uint8_t value); void pm_io_write16(uint8_t reg, uint16_t value); void pm_io_write32(uint8_t reg, uint32_t value); +/* Print source of last reset */ +void fch_print_pmxc0_status(void); + static inline uint8_t sm_pci_read8(uint8_t reg) { return read8(acpimmio_sm_pci + reg); |