1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Copyright 2013 Freescale Semiconductor, Inc.
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
5*4882a593Smuzhiyun */
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun #include <common.h>
8*4882a593Smuzhiyun #include <spi_flash.h>
9*4882a593Smuzhiyun #include <malloc.h>
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun #define ESPI_BOOT_IMAGE_SIZE 0x48
12*4882a593Smuzhiyun #define ESPI_BOOT_IMAGE_ADDR 0x50
13*4882a593Smuzhiyun #define CONFIG_CFG_DATA_SECTOR 0
14*4882a593Smuzhiyun
fsl_spi_spl_load_image(uint32_t offs,unsigned int size,void * vdst)15*4882a593Smuzhiyun void fsl_spi_spl_load_image(uint32_t offs, unsigned int size, void *vdst)
16*4882a593Smuzhiyun {
17*4882a593Smuzhiyun struct spi_flash *flash;
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS,
20*4882a593Smuzhiyun CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE);
21*4882a593Smuzhiyun if (flash == NULL) {
22*4882a593Smuzhiyun puts("\nspi_flash_probe failed");
23*4882a593Smuzhiyun hang();
24*4882a593Smuzhiyun }
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun spi_flash_read(flash, offs, size, vdst);
27*4882a593Smuzhiyun }
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun /*
30*4882a593Smuzhiyun * The main entry for SPI booting. It's necessary that SDRAM is already
31*4882a593Smuzhiyun * configured and available since this code loads the main U-Boot image
32*4882a593Smuzhiyun * from SPI into SDRAM and starts it from there.
33*4882a593Smuzhiyun */
fsl_spi_boot(void)34*4882a593Smuzhiyun void fsl_spi_boot(void)
35*4882a593Smuzhiyun {
36*4882a593Smuzhiyun void (*uboot)(void) __noreturn;
37*4882a593Smuzhiyun u32 offset, code_len, copy_len = 0;
38*4882a593Smuzhiyun #ifndef CONFIG_FSL_CORENET
39*4882a593Smuzhiyun unsigned char *buf = NULL;
40*4882a593Smuzhiyun #endif
41*4882a593Smuzhiyun struct spi_flash *flash;
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS,
44*4882a593Smuzhiyun CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE);
45*4882a593Smuzhiyun if (flash == NULL) {
46*4882a593Smuzhiyun puts("\nspi_flash_probe failed");
47*4882a593Smuzhiyun hang();
48*4882a593Smuzhiyun }
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun #ifdef CONFIG_FSL_CORENET
51*4882a593Smuzhiyun offset = CONFIG_SYS_SPI_FLASH_U_BOOT_OFFS;
52*4882a593Smuzhiyun code_len = CONFIG_SYS_SPI_FLASH_U_BOOT_SIZE;
53*4882a593Smuzhiyun #else
54*4882a593Smuzhiyun /*
55*4882a593Smuzhiyun * Load U-Boot image from SPI flash into RAM
56*4882a593Smuzhiyun */
57*4882a593Smuzhiyun buf = malloc(flash->page_size);
58*4882a593Smuzhiyun if (buf == NULL) {
59*4882a593Smuzhiyun puts("\nmalloc failed");
60*4882a593Smuzhiyun hang();
61*4882a593Smuzhiyun }
62*4882a593Smuzhiyun memset(buf, 0, flash->page_size);
63*4882a593Smuzhiyun
64*4882a593Smuzhiyun spi_flash_read(flash, CONFIG_CFG_DATA_SECTOR,
65*4882a593Smuzhiyun flash->page_size, (void *)buf);
66*4882a593Smuzhiyun offset = *(u32 *)(buf + ESPI_BOOT_IMAGE_ADDR);
67*4882a593Smuzhiyun /* Skip spl code */
68*4882a593Smuzhiyun offset += CONFIG_SYS_SPI_FLASH_U_BOOT_OFFS;
69*4882a593Smuzhiyun /* Get the code size from offset 0x48 */
70*4882a593Smuzhiyun code_len = *(u32 *)(buf + ESPI_BOOT_IMAGE_SIZE);
71*4882a593Smuzhiyun /* Skip spl code */
72*4882a593Smuzhiyun code_len = code_len - CONFIG_SPL_MAX_SIZE;
73*4882a593Smuzhiyun #endif
74*4882a593Smuzhiyun /* copy code to DDR */
75*4882a593Smuzhiyun printf("Loading second stage boot loader ");
76*4882a593Smuzhiyun while (copy_len <= code_len) {
77*4882a593Smuzhiyun spi_flash_read(flash, offset + copy_len, 0x2000,
78*4882a593Smuzhiyun (void *)(CONFIG_SYS_SPI_FLASH_U_BOOT_DST
79*4882a593Smuzhiyun + copy_len));
80*4882a593Smuzhiyun copy_len = copy_len + 0x2000;
81*4882a593Smuzhiyun putc('.');
82*4882a593Smuzhiyun }
83*4882a593Smuzhiyun
84*4882a593Smuzhiyun /*
85*4882a593Smuzhiyun * Jump to U-Boot image
86*4882a593Smuzhiyun */
87*4882a593Smuzhiyun flush_cache(CONFIG_SYS_SPI_FLASH_U_BOOT_DST, code_len);
88*4882a593Smuzhiyun uboot = (void *)CONFIG_SYS_SPI_FLASH_U_BOOT_START;
89*4882a593Smuzhiyun (*uboot)();
90*4882a593Smuzhiyun }
91