123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140 |
- // 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] = hextoul(tmp, NULL);
- }
- if (is_valid_ethaddr(mac_addr))
- eth_env_set_enetaddr("ethaddr", mac_addr);
- else
- meson_generate_serial_ethaddr();
- }
- odroid_detect_variant();
- return 0;
- }
|