diff options
Diffstat (limited to 'roms/u-boot/board/amlogic/odroid-n2/odroid-n2.c')
| -rw-r--r-- | roms/u-boot/board/amlogic/odroid-n2/odroid-n2.c | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/roms/u-boot/board/amlogic/odroid-n2/odroid-n2.c b/roms/u-boot/board/amlogic/odroid-n2/odroid-n2.c new file mode 100644 index 000000000..88a60f34f --- /dev/null +++ b/roms/u-boot/board/amlogic/odroid-n2/odroid-n2.c @@ -0,0 +1,140 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2020 BayLibre, SAS + * Author: Neil Armstrong <narmstrong@baylibre.com> + */ + +#include <common.h> +#include <dm.h> +#include <adc.h> +#include <env.h> +#include <init.h> +#include <net.h> +#include <asm/io.h> +#include <asm/arch/boot.h> +#include <asm/arch/sm.h> +#include <asm/arch/eth.h> +#include <asm/arch/boot.h> + +#define EFUSE_MAC_OFFSET 20 +#define EFUSE_MAC_SIZE 12 +#define MAC_ADDR_LEN 6 + +#define ODROID_HW_VS_ADC_CHANNEL 1 + +#define MESON_SOC_ID_G12B 0x29 +#define MESON_SOC_ID_SM1 0x2b + +int mmc_get_env_dev(void) +{ + if (meson_get_boot_device() == BOOT_DEVICE_EMMC) + return 1; + return 0; +} + +/* Variant detection is based on the ADC RAW values for the channel #1 */ +static struct meson_odroid_boards { + unsigned int soc_id; + unsigned int adc_min; + unsigned int adc_max; + char *variant; +} boards[] = { + /* OdroidN2 rev 2018,7,23 */ + { MESON_SOC_ID_G12B, 80 * 4, 90 * 4, "n2" }, + /* OdroidN2 rev 2018,12,6 */ + { MESON_SOC_ID_G12B, 160 * 4, 170 * 4, "n2" }, + /* OdroidN2 rev 2019,1,17 */ + { MESON_SOC_ID_G12B, 245 * 4, 255 * 4, "n2" }, + /* OdroidN2 rev 2019,2,7 */ + { MESON_SOC_ID_G12B, 330 * 4, 350 * 4, "n2" }, + /* OdroidN2plus rev 2019,11,20 */ + { MESON_SOC_ID_G12B, 410 * 4, 430 * 4, "n2_plus" }, + /* OdroidC4 rev 2020,01,29 */ + { MESON_SOC_ID_SM1, 80 * 4, 100 * 4, "c4" }, + /* OdroidHC4 rev 2019,12,10 */ + { MESON_SOC_ID_SM1, 300 * 4, 320 * 4, "hc4" }, + /* OdroidC4 rev 2019,11,29 */ + { MESON_SOC_ID_SM1, 335 * 4, 345 * 4, "c4" }, + /* OdroidHC4 rev 2020,8,7 */ + { MESON_SOC_ID_SM1, 590 * 4, 610 * 4, "hc4" }, +}; + +static void odroid_set_fdtfile(char *soc, char *variant) +{ + char s[128]; + + snprintf(s, sizeof(s), "amlogic/meson-%s-odroid-%s.dtb", soc, variant); + env_set("fdtfile", s); +} + +static int odroid_detect_variant(void) +{ + char *variant = "", *soc = ""; + unsigned int adcval = 0; + int ret, i, soc_id = 0; + + if (of_machine_is_compatible("amlogic,sm1")) { + soc_id = MESON_SOC_ID_SM1; + soc = "sm1"; + } else if (of_machine_is_compatible("amlogic,g12b")) { + soc_id = MESON_SOC_ID_G12B; + soc = "g12b"; + } else { + return -1; + } + + ret = adc_channel_single_shot("adc@9000", ODROID_HW_VS_ADC_CHANNEL, + &adcval); + if (ret) + return ret; + + for (i = 0 ; i < ARRAY_SIZE(boards) ; ++i) { + if (soc_id == boards[i].soc_id && + adcval >= boards[i].adc_min && + adcval < boards[i].adc_max) { + variant = boards[i].variant; + break; + } + } + + printf("Board variant: %s\n", variant); + env_set("variant", variant); + + odroid_set_fdtfile(soc, variant); + + return 0; +} + +int misc_init_r(void) +{ + u8 mac_addr[MAC_ADDR_LEN]; + char efuse_mac_addr[EFUSE_MAC_SIZE], tmp[3]; + ssize_t len; + + if (IS_ENABLED(CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG) && + meson_get_soc_rev(tmp, sizeof(tmp)) > 0) + env_set("soc_rev", tmp); + + if (!eth_env_get_enetaddr("ethaddr", mac_addr)) { + len = meson_sm_read_efuse(EFUSE_MAC_OFFSET, + efuse_mac_addr, EFUSE_MAC_SIZE); + if (len != EFUSE_MAC_SIZE) + return 0; + + /* MAC is stored in ASCII format, 1bytes = 2characters */ + for (int i = 0; i < 6; i++) { + tmp[0] = efuse_mac_addr[i * 2]; + tmp[1] = efuse_mac_addr[i * 2 + 1]; + tmp[2] = '\0'; + mac_addr[i] = simple_strtoul(tmp, NULL, 16); + } + + if (is_valid_ethaddr(mac_addr)) + eth_env_set_enetaddr("ethaddr", mac_addr); + else + meson_generate_serial_ethaddr(); + } + + odroid_detect_variant(); + return 0; +} |