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/* 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
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