diff options
| -rw-r--r-- | chip/it83xx/system.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/chip/it83xx/system.c b/chip/it83xx/system.c index f0cb9ddd73..a26e1f1026 100644 --- a/chip/it83xx/system.c +++ b/chip/it83xx/system.c @@ -7,6 +7,7 @@ #include "console.h" #include "cpu.h" +#include "ec2i_chip.h" #include "flash.h" #include "registers.h" #include "system.h" @@ -192,3 +193,84 @@ uintptr_t system_get_fw_reset_vector(uintptr_t base) return reset_vector; } + +static int command_rw_ec_reg(int argc, char **argv) +{ + volatile uint8_t *addr; + uint8_t value = 0; + enum ec2i_message em; + enum logical_device_number ldn; + enum host_pnpcfg_index idx; + int i; + char *e; + + if ((argc < 2) || (argc > 3)) + return EC_ERROR_PARAM_COUNT; + + addr = (uint8_t *)strtoi(argv[1], &e, 0); + if (*e) + return EC_ERROR_PARAM1; + + if (argc == 3) { + value = (uint8_t)strtoi(argv[2], &e, 0); + if (*e) + return EC_ERROR_PARAM2; + } + + /* access PNPCFG registers */ + if (((uint32_t)addr & 0xffff0000) == 0xec210000) { + /* set LDN */ + ldn = ((uint32_t)addr & 0xff00) >> 8; + idx = (uint32_t)addr & 0xff; + if (ec2i_write(HOST_INDEX_LDN, ldn) == EC2I_WRITE_ERROR) + return EC_ERROR_UNKNOWN; + + /* ec2i write */ + if (argc == 3) { + if (ec2i_write(idx, value) == EC2I_WRITE_ERROR) + return EC_ERROR_UNKNOWN; + em = ec2i_read(idx); + if (em == EC2I_READ_ERROR) + return EC_ERROR_UNKNOWN; + value = em & 0xff; + ccprintf("LDN%02X IDX%02X = %02x", ldn, idx, value); + /* ec2i read */ + } else { + for (i = 0; i < 256; i++) { + em = ec2i_read(i); + if (em == EC2I_READ_ERROR) + return EC_ERROR_UNKNOWN; + value = em & 0xff; + if (0 == (i % 16)) + ccprintf("\nLDN%02X IDX%02X: %02x", + ldn, i, value); + else + ccprintf(" %02x", value); + } + } + /* access EC registers */ + } else { + /* write register */ + if (argc == 3) { + *addr = value; + ccprintf("%08X = %02x", addr, *addr); + /* read registers */ + } else { + for (i = 0; i < 256; i++) { + if (0 == (i % 16)) + ccprintf("\n%08X: %02x", addr+i, + addr[i]); + else + ccprintf(" %02x", addr[i]); + } + } + } + ccprintf("\n"); + cflush(); + return EC_SUCCESS; +} +DECLARE_CONSOLE_COMMAND(rwreg, command_rw_ec_reg, + "addr [value (byte)]", + "R/W EC/PNPCFG registers." + " addr 0xec21xxyy for R/W PNPCFG, xx is LDN yy is IDX", + NULL); |