1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2000-2010
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
6 * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
7 * Andreas Heppel <aheppel@sysgo.de>
9 * (C) Copyright 2008 Atmel Corporation
14 #include <environment.h>
17 #include <spi_flash.h>
20 #include <dm/device-internal.h>
22 #ifndef CONFIG_SPL_BUILD
27 #ifdef CONFIG_ENV_OFFSET_REDUND
29 static ulong env_offset = CONFIG_ENV_OFFSET;
30 static ulong env_new_offset = CONFIG_ENV_OFFSET_REDUND;
34 #define OBSOLETE_FLAG 0
35 #endif /* CONFIG_ENV_OFFSET_REDUND */
37 DECLARE_GLOBAL_DATA_PTR;
39 static struct spi_flash *env_flash;
41 static int setup_flash_device(void)
43 #ifdef CONFIG_DM_SPI_FLASH
47 /* speed and mode will be read from DT */
48 ret = spi_flash_probe_bus_cs(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS,
49 CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE,
52 env_set_default("spi_flash_probe_bus_cs() failed", 0);
56 env_flash = dev_get_uclass_priv(new);
60 env_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS,
62 CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE);
64 env_set_default("spi_flash_probe() failed", 0);
72 #if defined(CONFIG_ENV_OFFSET_REDUND)
74 static int env_sf_save(void)
77 char *saved_buffer = NULL, flag = OBSOLETE_FLAG;
78 u32 saved_size, saved_offset, sector;
81 ret = setup_flash_device();
85 ret = env_export(&env_new);
88 env_new.flags = ACTIVE_FLAG;
90 if (gd->env_valid == ENV_VALID) {
91 env_new_offset = CONFIG_ENV_OFFSET_REDUND;
92 env_offset = CONFIG_ENV_OFFSET;
94 env_new_offset = CONFIG_ENV_OFFSET;
95 env_offset = CONFIG_ENV_OFFSET_REDUND;
98 /* Is the sector larger than the env (i.e. embedded) */
99 if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) {
100 saved_size = CONFIG_ENV_SECT_SIZE - CONFIG_ENV_SIZE;
101 saved_offset = env_new_offset + CONFIG_ENV_SIZE;
102 saved_buffer = memalign(ARCH_DMA_MINALIGN, saved_size);
107 ret = spi_flash_read(env_flash, saved_offset,
108 saved_size, saved_buffer);
113 sector = DIV_ROUND_UP(CONFIG_ENV_SIZE, CONFIG_ENV_SECT_SIZE);
115 puts("Erasing SPI flash...");
116 ret = spi_flash_erase(env_flash, env_new_offset,
117 sector * CONFIG_ENV_SECT_SIZE);
121 puts("Writing to SPI flash...");
123 ret = spi_flash_write(env_flash, env_new_offset,
124 CONFIG_ENV_SIZE, &env_new);
128 if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) {
129 ret = spi_flash_write(env_flash, saved_offset,
130 saved_size, saved_buffer);
135 ret = spi_flash_write(env_flash, env_offset + offsetof(env_t, flags),
136 sizeof(env_new.flags), &flag);
142 gd->env_valid = gd->env_valid == ENV_REDUND ? ENV_VALID : ENV_REDUND;
144 printf("Valid environment: %d\n", (int)gd->env_valid);
152 #endif /* CMD_SAVEENV */
154 static int env_sf_load(void)
157 int read1_fail, read2_fail;
158 env_t *tmp_env1, *tmp_env2;
160 tmp_env1 = (env_t *)memalign(ARCH_DMA_MINALIGN,
162 tmp_env2 = (env_t *)memalign(ARCH_DMA_MINALIGN,
164 if (!tmp_env1 || !tmp_env2) {
165 env_set_default("malloc() failed", 0);
170 ret = setup_flash_device();
174 read1_fail = spi_flash_read(env_flash, CONFIG_ENV_OFFSET,
175 CONFIG_ENV_SIZE, tmp_env1);
176 read2_fail = spi_flash_read(env_flash, CONFIG_ENV_OFFSET_REDUND,
177 CONFIG_ENV_SIZE, tmp_env2);
179 ret = env_import_redund((char *)tmp_env1, read1_fail, (char *)tmp_env2,
182 spi_flash_free(env_flash);
192 static int env_sf_save(void)
194 u32 saved_size, saved_offset, sector;
195 char *saved_buffer = NULL;
199 ret = setup_flash_device();
203 /* Is the sector larger than the env (i.e. embedded) */
204 if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) {
205 saved_size = CONFIG_ENV_SECT_SIZE - CONFIG_ENV_SIZE;
206 saved_offset = CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE;
207 saved_buffer = malloc(saved_size);
211 ret = spi_flash_read(env_flash, saved_offset,
212 saved_size, saved_buffer);
217 ret = env_export(&env_new);
221 sector = DIV_ROUND_UP(CONFIG_ENV_SIZE, CONFIG_ENV_SECT_SIZE);
223 puts("Erasing SPI flash...");
224 ret = spi_flash_erase(env_flash, CONFIG_ENV_OFFSET,
225 sector * CONFIG_ENV_SECT_SIZE);
229 puts("Writing to SPI flash...");
230 ret = spi_flash_write(env_flash, CONFIG_ENV_OFFSET,
231 CONFIG_ENV_SIZE, &env_new);
235 if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) {
236 ret = spi_flash_write(env_flash, saved_offset,
237 saved_size, saved_buffer);
251 #endif /* CMD_SAVEENV */
253 static int env_sf_load(void)
258 buf = (char *)memalign(ARCH_DMA_MINALIGN, CONFIG_ENV_SIZE);
260 env_set_default("malloc() failed", 0);
264 ret = setup_flash_device();
268 ret = spi_flash_read(env_flash,
269 CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE, buf);
271 env_set_default("spi_flash_read() failed", 0);
275 ret = env_import(buf, 1);
277 gd->env_valid = ENV_VALID;
280 spi_flash_free(env_flash);
289 #ifdef CONFIG_ENV_ADDR
290 __weak void *env_sf_get_env_addr(void)
292 return (void *)CONFIG_ENV_ADDR;
296 #if defined(INITENV) && defined(CONFIG_ENV_ADDR)
297 static int env_sf_init(void)
299 env_t *env_ptr = (env_t *)env_sf_get_env_addr();
301 if (crc32(0, env_ptr->data, ENV_SIZE) == env_ptr->crc) {
302 gd->env_addr = (ulong)&(env_ptr->data);
305 gd->env_addr = (ulong)&default_environment[0];
313 U_BOOT_ENV_LOCATION(sf) = {
314 .location = ENVL_SPI_FLASH,
315 ENV_NAME("SPI Flash")
318 .save = env_save_ptr(env_sf_save),
320 #if defined(INITENV) && defined(CONFIG_ENV_ADDR)