mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-24 20:13:39 +00:00
6a863894ad
Configure SPI flash devices into SPL. Add SPI boot option to spl.c. Document how to format flash for booting. Signed-off-by: Thomas Skibo <thomas-git@skibo.net> Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
144 lines
2.8 KiB
C
144 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (c) 2020-2021 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 UBRDG_RESET SIFIVE_GENERIC_GPIO_NR(0, 7)
|
|
#define ULPI_RESET SIFIVE_GENERIC_GPIO_NR(0, 9)
|
|
#define UHUB_RESET SIFIVE_GENERIC_GPIO_NR(0, 11)
|
|
#define GEM_PHY_RESET SIFIVE_GENERIC_GPIO_NR(0, 12)
|
|
|
|
#define MODE_SELECT_REG 0x1000
|
|
#define MODE_SELECT_SPI 0x6
|
|
#define MODE_SELECT_SD 0xb
|
|
#define MODE_SELECT_MASK GENMASK(3, 0)
|
|
|
|
static inline int spl_reset_device_by_gpio(const char *label, int pin, int low_width)
|
|
{
|
|
int ret;
|
|
|
|
ret = gpio_request(pin, label);
|
|
if (ret) {
|
|
debug("%s gpio request failed: %d\n", label, ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = gpio_direction_output(pin, 1);
|
|
if (ret) {
|
|
debug("%s gpio direction set failed: %d\n", label, ret);
|
|
return ret;
|
|
}
|
|
|
|
udelay(1);
|
|
|
|
gpio_set_value(pin, 0);
|
|
udelay(low_width);
|
|
gpio_set_value(pin, 1);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static inline int spl_gemgxl_init(void)
|
|
{
|
|
int ret;
|
|
/*
|
|
* GEMGXL init VSC8541 PHY reset sequence;
|
|
* leave pull-down active for 2ms
|
|
*/
|
|
udelay(2000);
|
|
ret = spl_reset_device_by_gpio("gem_phy_reset", GEM_PHY_RESET, 1);
|
|
mdelay(15);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static inline int spl_usb_pcie_bridge_init(void)
|
|
{
|
|
return spl_reset_device_by_gpio("usb_pcie_bridge_reset", UBRDG_RESET, 3000);
|
|
}
|
|
|
|
static inline int spl_usb_hub_init(void)
|
|
{
|
|
return spl_reset_device_by_gpio("usb_hub_reset", UHUB_RESET, 100);
|
|
}
|
|
|
|
static inline int spl_ulpi_init(void)
|
|
{
|
|
return spl_reset_device_by_gpio("ulpi_reset", ULPI_RESET, 1);
|
|
}
|
|
|
|
int spl_board_init_f(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = spl_soc_init();
|
|
if (ret) {
|
|
debug("HiFive Unmatched FU740 SPL init failed: %d\n", ret);
|
|
goto end;
|
|
}
|
|
|
|
ret = spl_gemgxl_init();
|
|
if (ret) {
|
|
debug("Gigabit ethernet PHY (VSC8541) init failed: %d\n", ret);
|
|
goto end;
|
|
}
|
|
|
|
ret = spl_usb_pcie_bridge_init();
|
|
if (ret) {
|
|
debug("USB Bridge (ASM1042A) init failed: %d\n", ret);
|
|
goto end;
|
|
}
|
|
|
|
ret = spl_usb_hub_init();
|
|
if (ret) {
|
|
debug("USB Hub (ASM1074) init failed: %d\n", ret);
|
|
goto end;
|
|
}
|
|
|
|
ret = spl_ulpi_init();
|
|
if (ret) {
|
|
debug("USB 2.0 PHY (USB3320C) init failed: %d\n", ret);
|
|
goto end;
|
|
}
|
|
|
|
end:
|
|
return ret;
|
|
}
|
|
|
|
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_SPI:
|
|
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
|