diff options
Diffstat (limited to 'drivers/soc/apple/rtkit-crashlog.c')
| -rw-r--r-- | drivers/soc/apple/rtkit-crashlog.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/drivers/soc/apple/rtkit-crashlog.c b/drivers/soc/apple/rtkit-crashlog.c index 732deed64660..8319e365110b 100644 --- a/drivers/soc/apple/rtkit-crashlog.c +++ b/drivers/soc/apple/rtkit-crashlog.c @@ -13,6 +13,17 @@ #define APPLE_RTKIT_CRASHLOG_VERSION FOURCC('C', 'v', 'e', 'r') #define APPLE_RTKIT_CRASHLOG_MBOX FOURCC('C', 'm', 'b', 'x') #define APPLE_RTKIT_CRASHLOG_TIME FOURCC('C', 't', 'i', 'm') +#define APPLE_RTKIT_CRASHLOG_REGS FOURCC('C', 'r', 'g', '8') + +/* For COMPILE_TEST on non-ARM64 architectures */ +#ifndef PSR_MODE_EL0t +#define PSR_MODE_EL0t 0x00000000 +#define PSR_MODE_EL1t 0x00000004 +#define PSR_MODE_EL1h 0x00000005 +#define PSR_MODE_EL2t 0x00000008 +#define PSR_MODE_EL2h 0x00000009 +#define PSR_MODE_MASK 0x0000000f +#endif struct apple_rtkit_crashlog_header { u32 fourcc; @@ -31,6 +42,24 @@ struct apple_rtkit_crashlog_mbox_entry { }; static_assert(sizeof(struct apple_rtkit_crashlog_mbox_entry) == 0x18); +struct apple_rtkit_crashlog_regs { + u32 unk_0; + u32 unk_4; + u64 regs[31]; + u64 sp; + u64 pc; + u64 psr; + u64 cpacr; + u64 fpsr; + u64 fpcr; + u64 unk[64]; + u64 far; + u64 unk_X; + u64 esr; + u64 unk_Z; +} __packed; +static_assert(sizeof(struct apple_rtkit_crashlog_regs) == 0x350); + static void apple_rtkit_crashlog_dump_str(struct apple_rtkit *rtk, u8 *bfr, size_t size) { @@ -94,6 +123,66 @@ static void apple_rtkit_crashlog_dump_mailbox(struct apple_rtkit *rtk, u8 *bfr, } } +static void apple_rtkit_crashlog_dump_regs(struct apple_rtkit *rtk, u8 *bfr, + size_t size) +{ + struct apple_rtkit_crashlog_regs *regs; + const char *el; + int i; + + if (size < sizeof(*regs)) { + dev_warn(rtk->dev, "RTKit: Regs section too small: 0x%zx", size); + return; + } + + regs = (struct apple_rtkit_crashlog_regs *)bfr; + + switch (regs->psr & PSR_MODE_MASK) { + case PSR_MODE_EL0t: + el = "EL0t"; + break; + case PSR_MODE_EL1t: + el = "EL1t"; + break; + case PSR_MODE_EL1h: + el = "EL1h"; + break; + case PSR_MODE_EL2t: + el = "EL2t"; + break; + case PSR_MODE_EL2h: + el = "EL2h"; + break; + default: + el = "unknown"; + break; + } + + dev_warn(rtk->dev, "RTKit: Exception dump:"); + dev_warn(rtk->dev, " == Exception taken from %s ==", el); + dev_warn(rtk->dev, " PSR = 0x%llx", regs->psr); + dev_warn(rtk->dev, " PC = 0x%llx\n", regs->pc); + dev_warn(rtk->dev, " ESR = 0x%llx\n", regs->esr); + dev_warn(rtk->dev, " FAR = 0x%llx\n", regs->far); + dev_warn(rtk->dev, " SP = 0x%llx\n", regs->sp); + dev_warn(rtk->dev, "\n"); + + for (i = 0; i < 31; i += 4) { + if (i < 28) + dev_warn(rtk->dev, + " x%02d-x%02d = %016llx %016llx %016llx %016llx\n", + i, i + 3, + regs->regs[i], regs->regs[i + 1], + regs->regs[i + 2], regs->regs[i + 3]); + else + dev_warn(rtk->dev, + " x%02d-x%02d = %016llx %016llx %016llx\n", i, i + 3, + regs->regs[i], regs->regs[i + 1], regs->regs[i + 2]); + } + + dev_warn(rtk->dev, "\n"); +} + void apple_rtkit_crashlog_dump(struct apple_rtkit *rtk, u8 *bfr, size_t size) { size_t offset; @@ -140,6 +229,10 @@ void apple_rtkit_crashlog_dump(struct apple_rtkit *rtk, u8 *bfr, size_t size) apple_rtkit_crashlog_dump_time(rtk, bfr + offset + 16, section_size); break; + case APPLE_RTKIT_CRASHLOG_REGS: + apple_rtkit_crashlog_dump_regs(rtk, bfr + offset + 16, + section_size); + break; default: dev_warn(rtk->dev, "RTKit: Unknown crashlog section: %x", |