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main: add L4T kernel panic report back

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L4T kernel now uses a PANIC magic flag instead of a bitflag and so it's simpler to detect.
This commit is contained in:
CTCaer 2022-01-16 01:23:39 +02:00
parent aa0a9da37b
commit 864ec50a2d
1 changed files with 22 additions and 9 deletions
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31
bootloader/main.c
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@ -1085,6 +1085,15 @@ out:
#define EXCP_TYPE_DABRT 0x54424144 // DABT #define EXCP_TYPE_DABRT 0x54424144 // DABT
#define EXCP_LR_ADDR 0x4003FFF4 #define EXCP_LR_ADDR 0x4003FFF4
#define PSTORE_LOG_OFFSET 0x180000
#define PSTORE_RAM_SIG 0x43474244 // DBGC.
typedef struct _pstore_buf {
u32 sig;
u32 start;
u32 size;
} pstore_buf_t;
static void _show_errors() static void _show_errors()
{ {
u32 *excp_enabled = (u32 *)EXCP_EN_ADDR; u32 *excp_enabled = (u32 *)EXCP_EN_ADDR;
@ -1095,14 +1104,12 @@ static void _show_errors()
if (*excp_enabled == EXCP_MAGIC) if (*excp_enabled == EXCP_MAGIC)
h_cfg.errors |= ERR_EXCEPTION; h_cfg.errors |= ERR_EXCEPTION;
#if 0 //! FIXME: Find a better way to identify if that scratch has proper data. if (PMC(APBDEV_PMC_SCRATCH37) == PMC_SCRATCH37_KERNEL_PANIC_MAGIC)
if (PMC(APBDEV_PMC_SCRATCH37) & PMC_SCRATCH37_KERNEL_PANIC_FLAG)
{ {
// Set error and clear flag. // Set error and clear flag.
h_cfg.errors |= ERR_L4T_KERNEL; h_cfg.errors |= ERR_L4T_KERNEL;
PMC(APBDEV_PMC_SCRATCH37) &= ~PMC_SCRATCH37_KERNEL_PANIC_FLAG; PMC(APBDEV_PMC_SCRATCH37) = 0;
} }
#endif
if (hw_rst_reason == PMC_RST_STATUS_WATCHDOG && if (hw_rst_reason == PMC_RST_STATUS_WATCHDOG &&
panic_status <= 0xFF && panic_status != 0x20 && panic_status != 0x21) panic_status <= 0xFF && panic_status != 0x20 && panic_status != 0x21)
@ -1146,20 +1153,26 @@ static void _show_errors()
WPRINTF("DABRT"); WPRINTF("DABRT");
break; break;
} }
WPRINTF("\n"); gfx_puts("\n");
// Clear the exception. // Clear the exception.
*excp_enabled = 0; *excp_enabled = 0;
} }
#if 0 //! FIXME: Find a better way to identify if that scratch has proper data. if (h_cfg.errors & ERR_L4T_KERNEL)
if (0 && h_cfg.errors & ERR_L4T_KERNEL)
{ {
WPRINTF("A kernel panic occurred!\n"); WPRINTF("A kernel panic occurred!\n");
if (!sd_save_to_file((void *)PSTORE_ADDR, PSTORE_SZ, "L4T_panic.bin")) if (!sd_save_to_file((void *)PSTORE_ADDR, PSTORE_SZ, "L4T_panic.bin"))
WPRINTF("PSTORE saved to L4T_panic.bin\n"); WPRINTF("PSTORE saved to L4T_panic.bin");
pstore_buf_t *buf = (pstore_buf_t *)(PSTORE_ADDR + PSTORE_LOG_OFFSET);
if (buf->sig == PSTORE_RAM_SIG && buf->size < 0x80000)
{
u32 log_offset = PSTORE_ADDR + PSTORE_LOG_OFFSET + sizeof(pstore_buf_t);
if (!sd_save_to_file((void *)log_offset, buf->size, "L4T_panic.txt"))
WPRINTF("Log saved to L4T_panic.txt");
}
gfx_puts("\n");
} }
#endif
if (h_cfg.errors & ERR_PANIC_CODE) if (h_cfg.errors & ERR_PANIC_CODE)
{ {