From f7cf76f8ac9ee61eb54184dd6a971af8a73ddb6a Mon Sep 17 00:00:00 2001 From: Heiko Schocher Date: Sun, 1 Dec 2019 11:23:23 +0100 Subject: [PATCH] imx6: aristainetos: add i2c eeprom support add support for i2c eeprom and add parsing "Rescue" or "DefEnv" at offset 0x1ff0. Signed-off-by: Heiko Schocher --- board/aristainetos/aristainetos.c | 64 ++++++++++++++++++++++++++++++- 1 file changed, 63 insertions(+), 1 deletion(-) diff --git a/board/aristainetos/aristainetos.c b/board/aristainetos/aristainetos.c index 846a99804a..55d3ab6f44 100644 --- a/board/aristainetos/aristainetos.c +++ b/board/aristainetos/aristainetos.c @@ -24,6 +24,8 @@ #include #include #include +#include +#include #include #include #include @@ -323,6 +325,64 @@ static void setup_board_gpio(void) setup_one_led("led_blue", LEDST_OFF); } +#define ARI_RESC_FMT "setenv rescue_reason setenv bootargs \\${bootargs}" \ + " rescueReason=%d " + +static void aristainetos_run_rescue_command(int reason) +{ + char rescue_reason_command[80]; + + sprintf(rescue_reason_command, ARI_RESC_FMT, reason); + run_command(rescue_reason_command, 0); +} + +static int aristainetos_eeprom(void) +{ + struct udevice *dev; + int off; + int ret; + u8 data[0x10]; + u8 rescue_reason; + + off = fdt_path_offset(gd->fdt_blob, "eeprom0"); + if (off < 0) { + printf("%s: No eeprom0 path offset\n", __func__); + return off; + } + + ret = uclass_get_device_by_of_offset(UCLASS_I2C_EEPROM, off, &dev); + if (ret) { + printf("%s: Could not find EEPROM\n", __func__); + return ret; + } + + ret = i2c_set_chip_offset_len(dev, 2); + if (ret) + return ret; + + ret = i2c_eeprom_read(dev, 0x1ff0, (uint8_t *)data, 6); + if (ret) { + printf("%s: Could not read EEPROM\n", __func__); + return ret; + } + + if (strncmp((char *)&data[3], "ReScUe", 6) == 0) { + rescue_reason = *(uint8_t *)&data[9]; + memset(&data[3], 0xff, 7); + i2c_eeprom_write(dev, 0x1ff0, (uint8_t *)&data[3], 7); + printf("\nBooting into Rescue System (EEPROM)\n"); + aristainetos_run_rescue_command(rescue_reason); + run_command("run rescue_load_fit rescueboot", 0); + } else if (strncmp((char *)data, "DeF", 3) == 0) { + memset(data, 0xff, 3); + i2c_eeprom_write(dev, 0x1ff0, (uint8_t *)data, 3); + printf("\nClear u-boot environment (set back to defaults)\n"); + run_command("run default_env; saveenv; saveenv", 0); + } + + return 0; +}; + int board_late_init(void) { char *my_bootdelay; @@ -372,12 +432,14 @@ int board_late_init(void) } } + /* eeprom work */ + aristainetos_eeprom(); + /* set board_type */ if (gd->board_type == BOARD_TYPE_4) env_set("board_type", ARI_BT_4); else env_set("board_type", ARI_BT_7); - return 0; } -- 2.39.5