12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788 |
- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (c) 2019 SiFive, Inc
- *
- * Authors:
- * Pragnesh Patel <pragnesh.patel@sifive.com>
- */
- #include <init.h>
- #include <spl.h>
- #include <misc.h>
- #include <log.h>
- #include <linux/delay.h>
- #include <linux/io.h>
- #include <asm/gpio.h>
- #include <asm/arch/gpio.h>
- #include <asm/arch/spl.h>
- #define GEM_PHY_RESET SIFIVE_GENERIC_GPIO_NR(0, 12)
- #define MODE_SELECT_REG 0x1000
- #define MODE_SELECT_QSPI 0x6
- #define MODE_SELECT_SD 0xb
- #define MODE_SELECT_MASK GENMASK(3, 0)
- int spl_board_init_f(void)
- {
- int ret;
- ret = spl_soc_init();
- if (ret) {
- debug("FU540 SPL init failed: %d\n", ret);
- return ret;
- }
- /*
- * GEMGXL init VSC8541 PHY reset sequence;
- * leave pull-down active for 2ms
- */
- udelay(2000);
- ret = gpio_request(GEM_PHY_RESET, "gem_phy_reset");
- if (ret) {
- debug("gem_phy_reset gpio request failed: %d\n", ret);
- return ret;
- }
- /* Set GPIO 12 (PHY NRESET) */
- ret = gpio_direction_output(GEM_PHY_RESET, 1);
- if (ret) {
- debug("gem_phy_reset gpio direction set failed: %d\n", ret);
- return ret;
- }
- udelay(1);
- /* Reset PHY again to enter unmanaged mode */
- gpio_set_value(GEM_PHY_RESET, 0);
- udelay(1);
- gpio_set_value(GEM_PHY_RESET, 1);
- mdelay(15);
- return 0;
- }
- u32 spl_boot_device(void)
- {
- u32 mode_select = readl((void *)MODE_SELECT_REG);
- u32 boot_device = mode_select & MODE_SELECT_MASK;
- switch (boot_device) {
- case MODE_SELECT_QSPI:
- return BOOT_DEVICE_SPI;
- case MODE_SELECT_SD:
- return BOOT_DEVICE_MMC1;
- default:
- debug("Unsupported boot device 0x%x but trying MMC1\n",
- boot_device);
- return BOOT_DEVICE_MMC1;
- }
- }
- #ifdef CONFIG_SPL_LOAD_FIT
- int board_fit_config_name_match(const char *name)
- {
- /* boot using first FIT config */
- return 0;
- }
- #endif
|