diff options
Diffstat (limited to 'arch/arm/mach-imx/bootrom-cmd.c')
| -rw-r--r-- | arch/arm/mach-imx/bootrom-cmd.c | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/bootrom-cmd.c b/arch/arm/mach-imx/bootrom-cmd.c new file mode 100644 index 0000000000..08e393b01a --- /dev/null +++ b/arch/arm/mach-imx/bootrom-cmd.c @@ -0,0 +1,227 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <command.h> +#include <errno.h> +#include <getopt.h> +#include <printk.h> +#include <linux/bitops.h> +#include <linux/bitfield.h> +#include <mach/imx/imx8m-regs.h> +#include <mach/imx/romapi.h> + +/* i.MX7 and later ID field is swapped compared to i.MX6 */ +#define ROM_EVENT_FORMAT_V0_RES GENMASK(31, 24) +#define ROM_EVENT_FORMAT_V0_ID GENMASK(23, 0) +#define ROM_EVENT_FORMAT_V1_ID GENMASK(31, 24) +#define ROM_EVENT_FORMAT_V1_ID_TYPE GENMASK(31, 28) +#define ROM_EVENT_FORMAT_V1_ID_IDX GENMASK(27, 24) +#define ROM_EVENT_FORMAT_V1_RES GENMASK(23, 0) + +static const char *lookup(const char *table[], size_t table_size, size_t idx) +{ + const char *str = NULL; + + if (idx < table_size) + str = table[idx]; + + return str ?: "unknown"; +} + +#define LOOKUP(table, idx) lookup(table, ARRAY_SIZE(table), idx) + +static const char *boot_mode_0x1y[] = { + "Fuse", "Serial Download", "Internal Download", "Test Mode" +}; + +static const char *secure_config_0x2y[] = { + "FAB", "Field Return", "Open", "Closed" +}; + +static const char *boot_image_0x5y[] = { + "primary", "secondary" +}; + +static const char *boot_device_0x6y[] = { + "RAW NAND", "SD or EMMC", NULL, NULL, "ECSPI NOR", NULL, NULL, "QSPI NOR" +}; + +/* Parse the ROM event ID defintion version 1 log, see AN12853 */ +static int imx8m_bootrom_decode_log(const u32 *rom_log) +{ + int i; + + if (!rom_log) + return -ENODATA; + + for (i = 0; i < 128; i++) { + u8 event_id = FIELD_GET(ROM_EVENT_FORMAT_V1_ID, rom_log[i]); + u8 event_id_idx = FIELD_GET(ROM_EVENT_FORMAT_V1_ID_IDX, rom_log[i]); + const char *arg = NULL; + + printf("[%02x] ", event_id); + switch (event_id) { + case 0x0: + printf("End of list\n"); + return 0; + case 0x01: + printf("ROM event version 0x%02x\n", rom_log[i] & 0xFF); + continue; + + case 0x10 ... 0x13: + printf("Boot mode is Boot from %s\n", + LOOKUP(boot_mode_0x1y, event_id_idx)); + continue; + + case 0x20 ... 0x23: + printf("Secure config is %s\n", + LOOKUP(secure_config_0x2y, event_id_idx)); + continue; + + case 0x30 ... 0x31: + case 0xe0: + printf("Internal use\n"); + continue; + + case 0x40 ... 0x41: + printf("FUSE_SEL_VALUE Fuse is %sblown\n", + event_id_idx ? "" : "not "); + continue; + + case 0x50 ... 0x51: + printf("Boot from the %s boot image\n", + LOOKUP(boot_image_0x5y, event_id_idx)); + continue; + + case 0x74: + arg = "SPI NAND"; + fallthrough; + case 0x60 ... 0x67: + printf("Primary boot from %s device\n", + arg ?: LOOKUP(boot_device_0x6y, event_id_idx)); + continue; + + case 0x71: + printf("Recovery boot from ECSPI NOR device\n"); + continue; + case 0x72: + printf("No Recovery boot device\n"); + continue; + case 0x73: + printf("Manufacture boot from SD or EMMC\n"); + continue; + + case 0x80: + printf("Start to perform the device initialization: @%u ticks\n", + rom_log[++i]); + continue; + case 0x81: + printf("The boot device initialization completes: @%u ticks\n", + rom_log[++i]); + continue; + case 0x82: + printf("Start to execute boot device driver pre-config @%u ticks\n", + rom_log[++i]); + continue; + case 0x83: + printf("Boot device driver pre-config completes\n"); + continue; + case 0x8E: + printf("Boot device driver pre-config fails\n"); + continue; + case 0x8f: + printf("boot device initialization fails: @%u ticks\n", + rom_log[++i]); + continue; + + case 0x90: + printf("Start to read data from boot device: @ offset %08x\n", + rom_log[++i]); + continue; + case 0x91: + printf("Reading data from boot device completes: @%u ticks\n", + rom_log[++i]); + continue; + case 0x9f: + printf("Reading data from boot device fails: @%u ticks\n", + rom_log[++i]); + continue; + + case 0xa0: + printf("Image authentication result: %s(0x%08x) @%u ticks\n", + (rom_log[i+1] & 0xFF) == 0xF0 ? "PASS " : "", + rom_log[i+1], rom_log[i+2]); + i += 2; + continue; + case 0xa1: + printf("IVT header is not valid\n"); + continue; + + case 0xc0: + printf("Jump to the boot image soon: @ offset 0x%08x @ %u ticks\n", + rom_log[i+1], rom_log[i+2]); + i += 2; + continue; + + case 0xd0: + printf("Enters serial download processing\n"); + continue; + + case 0xf0: + printf("Enters ROM exception handler\n"); + continue; + default: + printf("Unknown\n"); + continue; + } + } + + return -EILSEQ; +} + +static int do_bootrom(int argc, char *argv[]) +{ + union { + const u32 *ptr; + ulong addr; + } rom_log = { NULL }; + bool log = false; + int ret, opt; + + while((opt = getopt(argc, argv, "la:")) > 0) { + switch(opt) { + case 'a': + ret = kstrtoul(optarg, 0, &rom_log.addr); + if (ret) + return ret; + case 'l': + log = true; + break; + default: + return COMMAND_ERROR_USAGE; + } + } + + if (!rom_log.addr) + rom_log.ptr = imx8m_get_bootrom_log(); + + if (log) + return imx8m_bootrom_decode_log(rom_log.ptr); + + return COMMAND_ERROR_USAGE; +} + +BAREBOX_CMD_HELP_START(bootrom) +BAREBOX_CMD_HELP_TEXT("List information about the specified files or directories.") +BAREBOX_CMD_HELP_TEXT("") +BAREBOX_CMD_HELP_TEXT("Options:") +BAREBOX_CMD_HELP_OPT ("-l", "list event log") +BAREBOX_CMD_HELP_OPT ("-a ADDR", "event log address (default PBL scratch space)") +BAREBOX_CMD_HELP_END + +BAREBOX_CMD_START(bootrom) + .cmd = do_bootrom, + BAREBOX_CMD_DESC("Interact with BootROM on i.MX8M") + BAREBOX_CMD_OPTS("[-la]") + BAREBOX_CMD_HELP(cmd_bootrom_help) + BAREBOX_CMD_GROUP(CMD_GRP_INFO) +BAREBOX_CMD_END |