efi_loader: remove superfluous check in efi_setup_loaded_image()
[oweals/u-boot.git] / common / spl / spl_spi.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (C) 2011 OMICRON electronics GmbH
4  *
5  * based on drivers/mtd/nand/raw/nand_spl_load.c
6  *
7  * Copyright (C) 2011
8  * Heiko Schocher, DENX Software Engineering, hs@denx.de.
9  */
10
11 #include <common.h>
12 #include <spi.h>
13 #include <spi_flash.h>
14 #include <errno.h>
15 #include <spl.h>
16
17 DECLARE_GLOBAL_DATA_PTR;
18
19 #ifdef CONFIG_SPL_OS_BOOT
20 /*
21  * Load the kernel, check for a valid header we can parse, and if found load
22  * the kernel and then device tree.
23  */
24 static int spi_load_image_os(struct spl_image_info *spl_image,
25                              struct spi_flash *flash,
26                              struct image_header *header)
27 {
28         int err;
29
30         /* Read for a header, parse or error out. */
31         spi_flash_read(flash, CONFIG_SYS_SPI_KERNEL_OFFS, sizeof(*header),
32                        (void *)header);
33
34         if (image_get_magic(header) != IH_MAGIC)
35                 return -1;
36
37         err = spl_parse_image_header(spl_image, header);
38         if (err)
39                 return err;
40
41         spi_flash_read(flash, CONFIG_SYS_SPI_KERNEL_OFFS,
42                        spl_image->size, (void *)spl_image->load_addr);
43
44         /* Read device tree. */
45         spi_flash_read(flash, CONFIG_SYS_SPI_ARGS_OFFS,
46                        CONFIG_SYS_SPI_ARGS_SIZE,
47                        (void *)CONFIG_SYS_SPL_ARGS_ADDR);
48
49         return 0;
50 }
51 #endif
52
53 static ulong spl_spi_fit_read(struct spl_load_info *load, ulong sector,
54                               ulong count, void *buf)
55 {
56         struct spi_flash *flash = load->dev;
57         ulong ret;
58
59         ret = spi_flash_read(flash, sector, count, buf);
60         if (!ret)
61                 return count;
62         else
63                 return 0;
64 }
65 /*
66  * The main entry for SPI booting. It's necessary that SDRAM is already
67  * configured and available since this code loads the main U-Boot image
68  * from SPI into SDRAM and starts it from there.
69  */
70 static int spl_spi_load_image(struct spl_image_info *spl_image,
71                               struct spl_boot_device *bootdev)
72 {
73         int err = 0;
74         unsigned payload_offs = CONFIG_SYS_SPI_U_BOOT_OFFS;
75         struct spi_flash *flash;
76         struct image_header *header;
77
78         /*
79          * Load U-Boot image from SPI flash into RAM
80          */
81
82         flash = spi_flash_probe(CONFIG_SF_DEFAULT_BUS,
83                                 CONFIG_SF_DEFAULT_CS,
84                                 CONFIG_SF_DEFAULT_SPEED,
85                                 CONFIG_SF_DEFAULT_MODE);
86         if (!flash) {
87                 puts("SPI probe failed.\n");
88                 return -ENODEV;
89         }
90
91         header = spl_get_load_buffer(-sizeof(*header), sizeof(*header));
92
93 #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
94         payload_offs = fdtdec_get_config_int(gd->fdt_blob,
95                                              "u-boot,spl-payload-offset",
96                                              payload_offs);
97 #endif
98
99 #ifdef CONFIG_SPL_OS_BOOT
100         if (spl_start_uboot() || spi_load_image_os(spl_image, flash, header))
101 #endif
102         {
103                 /* Load u-boot, mkimage header is 64 bytes. */
104                 err = spi_flash_read(flash, payload_offs, sizeof(*header),
105                                      (void *)header);
106                 if (err) {
107                         debug("%s: Failed to read from SPI flash (err=%d)\n",
108                               __func__, err);
109                         return err;
110                 }
111
112                 if (IS_ENABLED(CONFIG_SPL_LOAD_FIT_FULL) &&
113                     image_get_magic(header) == FDT_MAGIC) {
114                         err = spi_flash_read(flash, payload_offs,
115                                              roundup(fdt_totalsize(header), 4),
116                                              (void *)CONFIG_SYS_LOAD_ADDR);
117                         if (err)
118                                 return err;
119                         err = spl_parse_image_header(spl_image,
120                                         (struct image_header *)CONFIG_SYS_LOAD_ADDR);
121                 } else if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
122                            image_get_magic(header) == FDT_MAGIC) {
123                         struct spl_load_info load;
124
125                         debug("Found FIT\n");
126                         load.dev = flash;
127                         load.priv = NULL;
128                         load.filename = NULL;
129                         load.bl_len = 1;
130                         load.read = spl_spi_fit_read;
131                         err = spl_load_simple_fit(spl_image, &load,
132                                                   payload_offs,
133                                                   header);
134                 } else {
135                         err = spl_parse_image_header(spl_image, header);
136                         if (err)
137                                 return err;
138                         err = spi_flash_read(flash, payload_offs,
139                                              spl_image->size,
140                                              (void *)spl_image->load_addr);
141                 }
142         }
143
144         return err;
145 }
146 /* Use priorty 1 so that boards can override this */
147 SPL_LOAD_IMAGE_METHOD("SPI", 1, BOOT_DEVICE_SPI, spl_spi_load_image);