1// SPDX-License-Identifier: GPL-2.0 2/* 3 * Copyright 2019 Google LLC 4 */ 5 6#define LOG_CATEGORY LOGC_BOOT 7 8#include <common.h> 9#include <binman_sym.h> 10#include <bootstage.h> 11#include <dm.h> 12#include <image.h> 13#include <log.h> 14#include <malloc.h> 15#include <spi.h> 16#include <spl.h> 17#include <spi_flash.h> 18#include <asm/fast_spi.h> 19#include <asm/spl.h> 20#include <asm/arch/cpu.h> 21#include <asm/arch/iomap.h> 22#include <dm/device-internal.h> 23#include <dm/uclass-internal.h> 24 25/* This reads the next phase from mapped SPI flash */ 26static int rom_load_image(struct spl_image_info *spl_image, 27 struct spl_boot_device *bootdev) 28{ 29 ulong spl_pos = spl_get_image_pos(); 30 ulong spl_size = spl_get_image_size(); 31 struct udevice *dev; 32 ulong map_base; 33 size_t map_size; 34 uint offset; 35 int ret; 36 37 spl_image->size = CONFIG_SYS_MONITOR_LEN; /* We don't know SPL size */ 38 spl_image->entry_point = spl_get_image_text_base(); 39 spl_image->load_addr = spl_image->entry_point; 40 spl_image->os = IH_OS_U_BOOT; 41 spl_image->name = "U-Boot"; 42 log_debug("Reading from mapped SPI %lx, size %lx\n", spl_pos, spl_size); 43 44 if (CONFIG_IS_ENABLED(SPI_FLASH_SUPPORT)) { 45 ret = uclass_find_first_device(UCLASS_SPI_FLASH, &dev); 46 if (ret) 47 return log_msg_ret("spi_flash", ret); 48 if (!dev) 49 return log_msg_ret("spi_flash dev", -ENODEV); 50 ret = dm_spi_get_mmap(dev, &map_base, &map_size, &offset); 51 if (ret) 52 return log_msg_ret("mmap", ret); 53 } else { 54 ret = fast_spi_get_bios_mmap(PCH_DEV_SPI, &map_base, &map_size, 55 &offset); 56 if (ret) 57 return ret; 58 } 59 spl_pos += map_base & ~0xff000000; 60 log_debug(", base %lx, pos %lx, load %lx\n", map_base, spl_pos, 61 spl_image->load_addr); 62 bootstage_start(BOOTSTAGE_ID_ACCUM_MMAP_SPI, "mmap_spi"); 63 memcpy((void *)spl_image->load_addr, (void *)spl_pos, spl_size); 64 cpu_flush_l1d_to_l2(); 65 bootstage_accum(BOOTSTAGE_ID_ACCUM_MMAP_SPI); 66 67 return 0; 68} 69SPL_LOAD_IMAGE_METHOD("Mapped SPI", 2, BOOT_DEVICE_SPI_MMAP, rom_load_image); 70 71#if CONFIG_IS_ENABLED(SPI_FLASH_SUPPORT) 72 73static int apl_flash_std_read(struct udevice *dev, u32 offset, size_t len, 74 void *buf) 75{ 76 struct spi_flash *flash = dev_get_uclass_priv(dev); 77 struct mtd_info *mtd = &flash->mtd; 78 size_t retlen; 79 80 return log_ret(mtd->_read(mtd, offset, len, &retlen, buf)); 81} 82 83static int apl_flash_probe(struct udevice *dev) 84{ 85 return spi_flash_std_probe(dev); 86} 87 88static const struct dm_spi_flash_ops apl_flash_ops = { 89 .read = apl_flash_std_read, 90}; 91 92static const struct udevice_id apl_flash_ids[] = { 93 { .compatible = "jedec,spi-nor" }, 94 { } 95}; 96 97U_BOOT_DRIVER(winbond_w25q128fw) = { 98 .name = "winbond_w25q128fw", 99 .id = UCLASS_SPI_FLASH, 100 .of_match = apl_flash_ids, 101 .probe = apl_flash_probe, 102 .priv_auto = sizeof(struct spi_nor), 103 .ops = &apl_flash_ops, 104}; 105 106/* This uses a SPI flash device to read the next phase */ 107static int spl_fast_spi_load_image(struct spl_image_info *spl_image, 108 struct spl_boot_device *bootdev) 109{ 110 ulong spl_pos = spl_get_image_pos(); 111 ulong spl_size = spl_get_image_size(); 112 struct udevice *dev; 113 int ret; 114 115 ret = uclass_first_device_err(UCLASS_SPI_FLASH, &dev); 116 if (ret) 117 return ret; 118 119 spl_image->size = CONFIG_SYS_MONITOR_LEN; /* We don't know SPL size */ 120 spl_image->entry_point = spl_phase() == PHASE_TPL ? 121 CONFIG_SPL_TEXT_BASE : CONFIG_TEXT_BASE; 122 spl_image->load_addr = spl_image->entry_point; 123 spl_image->os = IH_OS_U_BOOT; 124 spl_image->name = "U-Boot"; 125 spl_pos &= ~0xff000000; 126 log_debug("Reading from flash %lx, size %lx\n", spl_pos, spl_size); 127 ret = spi_flash_read_dm(dev, spl_pos, spl_size, 128 (void *)spl_image->load_addr); 129 cpu_flush_l1d_to_l2(); 130 if (ret) 131 return ret; 132 133 return 0; 134} 135SPL_LOAD_IMAGE_METHOD("Fast SPI", 1, BOOT_DEVICE_FAST_SPI, 136 spl_fast_spi_load_image); 137 138void board_boot_order(u32 *spl_boot_list) 139{ 140 bool use_spi_flash = IS_ENABLED(CONFIG_APL_BOOT_FROM_FAST_SPI_FLASH); 141 142 if (use_spi_flash) { 143 spl_boot_list[0] = BOOT_DEVICE_FAST_SPI; 144 spl_boot_list[1] = BOOT_DEVICE_SPI_MMAP; 145 } else { 146 spl_boot_list[0] = BOOT_DEVICE_SPI_MMAP; 147 spl_boot_list[1] = BOOT_DEVICE_FAST_SPI; 148 } 149} 150 151#else 152 153void board_boot_order(u32 *spl_boot_list) 154{ 155 spl_boot_list[0] = BOOT_DEVICE_SPI_MMAP; 156} 157#endif 158