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Aneesh Vbcae7212011-07-21 09:10:21 -04001/*
2 * (C) Copyright 2010
3 * Texas Instruments, <www.ti.com>
4 *
5 * Aneesh V <aneesh@ti.com>
6 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02007 * SPDX-License-Identifier: GPL-2.0+
Aneesh Vbcae7212011-07-21 09:10:21 -04008 */
9#include <common.h>
Tom Rini47f7bca2012-08-13 12:03:19 -070010#include <spl.h>
Aneesh Vbcae7212011-07-21 09:10:21 -040011#include <asm/u-boot.h>
Simon Schwarzbb085b82011-09-14 15:29:26 -040012#include <nand.h>
Aneesh V8cf686e2011-07-21 09:10:27 -040013#include <fat.h>
Simon Glassefb21722011-10-10 08:55:19 +000014#include <version.h>
Aneesh V8cf686e2011-07-21 09:10:27 -040015#include <i2c.h>
16#include <image.h>
Aneesh V2d01dd92011-10-21 12:29:34 -040017#include <malloc.h>
Andreas Müller761ca312012-01-04 15:26:24 +000018#include <linux/compiler.h>
Aneesh Vbcae7212011-07-21 09:10:21 -040019
20DECLARE_GLOBAL_DATA_PTR;
21
Stefan Roese3c6f8a02012-08-28 10:50:59 +020022#ifndef CONFIG_SYS_UBOOT_START
23#define CONFIG_SYS_UBOOT_START CONFIG_SYS_TEXT_BASE
24#endif
Stefano Babicae83d882012-08-23 12:46:16 +020025#ifndef CONFIG_SYS_MONITOR_LEN
26#define CONFIG_SYS_MONITOR_LEN (200 * 1024)
27#endif
28
Tom Rini47f7bca2012-08-13 12:03:19 -070029u32 *boot_params_ptr = NULL;
Simon Schwarz9ea5c6e2011-09-14 15:33:34 -040030struct spl_image_info spl_image;
31
Tom Rini6507f132012-08-22 15:31:05 -070032/* Define board data structure */
Aneesh Vbcae7212011-07-21 09:10:21 -040033static bd_t bdata __attribute__ ((section(".data")));
34
Simon Schwarz379c19a2012-03-15 04:01:38 +000035/*
36 * Default function to determine if u-boot or the OS should
37 * be started. This implementation always returns 1.
38 *
39 * Please implement your own board specific funcion to do this.
40 *
41 * RETURN
42 * 0 to not start u-boot
43 * positive if u-boot should start
44 */
45#ifdef CONFIG_SPL_OS_BOOT
46__weak int spl_start_uboot(void)
47{
Tom Rini026b2fe2012-08-14 12:06:43 -070048 puts("SPL: Please implement spl_start_uboot() for your board\n");
49 puts("SPL: Direct Linux boot not active!\n");
Simon Schwarz379c19a2012-03-15 04:01:38 +000050 return 1;
51}
52#endif
53
Stefan Roeseea8256f2012-08-23 08:34:21 +020054/*
55 * Weak default function for board specific cleanup/preparation before
56 * Linux boot. Some boards/platforms might not need it, so just provide
57 * an empty stub here.
58 */
59__weak void spl_board_prepare_for_linux(void)
60{
61 /* Nothing to do! */
62}
63
Simon Schwarz9ea5c6e2011-09-14 15:33:34 -040064void spl_parse_image_header(const struct image_header *header)
Aneesh V8cf686e2011-07-21 09:10:27 -040065{
66 u32 header_size = sizeof(struct image_header);
67
Stefan Roese77552b02012-08-27 12:50:57 +020068 if (image_get_magic(header) == IH_MAGIC) {
Stefan Roese022b4972012-08-27 12:50:58 +020069 if (spl_image.flags & SPL_COPY_PAYLOAD_ONLY) {
70 /*
71 * On some system (e.g. powerpc), the load-address and
72 * entry-point is located at address 0. We can't load
73 * to 0-0x40. So skip header in this case.
74 */
75 spl_image.load_addr = image_get_load(header);
76 spl_image.entry_point = image_get_ep(header);
77 spl_image.size = image_get_data_size(header);
78 } else {
79 spl_image.entry_point = image_get_load(header);
80 /* Load including the header */
81 spl_image.load_addr = spl_image.entry_point -
82 header_size;
83 spl_image.size = image_get_data_size(header) +
84 header_size;
85 }
Stefan Roese77552b02012-08-27 12:50:57 +020086 spl_image.os = image_get_os(header);
87 spl_image.name = image_get_name(header);
Taras Kondratiuk62cf11c2013-07-16 14:45:01 +030088 debug("spl: payload image: %.*s load addr: 0x%x size: %d\n",
89 sizeof(spl_image.name), spl_image.name,
90 spl_image.load_addr, spl_image.size);
Aneesh V8cf686e2011-07-21 09:10:27 -040091 } else {
92 /* Signature not found - assume u-boot.bin */
Tom Rini026b2fe2012-08-14 12:06:43 -070093 debug("mkimage signature not found - ih_magic = %x\n",
Aneesh V8cf686e2011-07-21 09:10:27 -040094 header->ih_magic);
Aneesh V8cf686e2011-07-21 09:10:27 -040095 /* Let's assume U-Boot will not be more than 200 KB */
Stefano Babicae83d882012-08-23 12:46:16 +020096 spl_image.size = CONFIG_SYS_MONITOR_LEN;
Stefan Roese3c6f8a02012-08-28 10:50:59 +020097 spl_image.entry_point = CONFIG_SYS_UBOOT_START;
Simon Schwarz9ea5c6e2011-09-14 15:33:34 -040098 spl_image.load_addr = CONFIG_SYS_TEXT_BASE;
99 spl_image.os = IH_OS_U_BOOT;
100 spl_image.name = "U-Boot";
Aneesh V8cf686e2011-07-21 09:10:27 -0400101 }
102}
103
Allen Martina759f1e2012-10-19 21:08:22 +0000104__weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
Aneesh V8cf686e2011-07-21 09:10:27 -0400105{
SRICHARAN R4a0eb752013-04-24 00:41:24 +0000106 typedef void __noreturn (*image_entry_noargs_t)(void);
107
Aneesh V8cf686e2011-07-21 09:10:27 -0400108 image_entry_noargs_t image_entry =
Allen Martina759f1e2012-10-19 21:08:22 +0000109 (image_entry_noargs_t) spl_image->entry_point;
Aneesh V8cf686e2011-07-21 09:10:27 -0400110
Allen Martina759f1e2012-10-19 21:08:22 +0000111 debug("image entry point: 0x%X\n", spl_image->entry_point);
SRICHARAN R4a0eb752013-04-24 00:41:24 +0000112 image_entry();
Aneesh V8cf686e2011-07-21 09:10:27 -0400113}
114
Pavel Machekc57b9532012-08-30 22:42:11 +0200115#ifdef CONFIG_SPL_RAM_DEVICE
116static void spl_ram_load_image(void)
117{
118 const struct image_header *header;
119
120 /*
121 * Get the header. It will point to an address defined by handoff
122 * which will tell where the image located inside the flash. For
123 * now, it will temporary fixed to address pointed by U-Boot.
124 */
125 header = (struct image_header *)
126 (CONFIG_SYS_TEXT_BASE - sizeof(struct image_header));
127
128 spl_parse_image_header(header);
129}
130#endif
131
Tom Rini6507f132012-08-22 15:31:05 -0700132void board_init_r(gd_t *dummy1, ulong dummy2)
Aneesh Vbcae7212011-07-21 09:10:21 -0400133{
Aneesh V8cf686e2011-07-21 09:10:27 -0400134 u32 boot_device;
135 debug(">>spl:board_init_r()\n");
136
Tom Rini24dafad2012-08-13 14:13:07 -0700137#ifdef CONFIG_SYS_SPL_MALLOC_START
Aneesh V2d01dd92011-10-21 12:29:34 -0400138 mem_malloc_init(CONFIG_SYS_SPL_MALLOC_START,
139 CONFIG_SYS_SPL_MALLOC_SIZE);
Tom Rini24dafad2012-08-13 14:13:07 -0700140#endif
Aneesh V2d01dd92011-10-21 12:29:34 -0400141
Stefan Roeseea8256f2012-08-23 08:34:21 +0200142#ifndef CONFIG_PPC
143 /*
144 * timer_init() does not exist on PPC systems. The timer is initialized
145 * and enabled (decrementer) in interrupt_init() here.
146 */
Ilya Yanok4063c772012-09-17 10:26:26 +0000147 timer_init();
Stefan Roeseea8256f2012-08-23 08:34:21 +0200148#endif
Ilya Yanok4063c772012-09-17 10:26:26 +0000149
Tom Riniee08a822011-11-23 05:13:06 +0000150#ifdef CONFIG_SPL_BOARD_INIT
151 spl_board_init();
152#endif
153
Tom Rini8e1b8362012-08-13 12:53:23 -0700154 boot_device = spl_boot_device();
Aneesh V8cf686e2011-07-21 09:10:27 -0400155 debug("boot device - %d\n", boot_device);
156 switch (boot_device) {
Pavel Machekc57b9532012-08-30 22:42:11 +0200157#ifdef CONFIG_SPL_RAM_DEVICE
158 case BOOT_DEVICE_RAM:
159 spl_ram_load_image();
160 break;
161#endif
Simon Schwarzbb085b82011-09-14 15:29:26 -0400162#ifdef CONFIG_SPL_MMC_SUPPORT
Aneesh V8cf686e2011-07-21 09:10:27 -0400163 case BOOT_DEVICE_MMC1:
164 case BOOT_DEVICE_MMC2:
Balaji T Kf75231b2012-03-12 02:25:47 +0000165 case BOOT_DEVICE_MMC2_2:
Simon Schwarz9ea5c6e2011-09-14 15:33:34 -0400166 spl_mmc_load_image();
Aneesh V8cf686e2011-07-21 09:10:27 -0400167 break;
Simon Schwarzbb085b82011-09-14 15:29:26 -0400168#endif
169#ifdef CONFIG_SPL_NAND_SUPPORT
170 case BOOT_DEVICE_NAND:
Simon Schwarz9ea5c6e2011-09-14 15:33:34 -0400171 spl_nand_load_image();
Simon Schwarzbb085b82011-09-14 15:29:26 -0400172 break;
173#endif
Enric Balletbo i Serra60009922013-02-07 23:14:48 +0000174#ifdef CONFIG_SPL_ONENAND_SUPPORT
175 case BOOT_DEVICE_ONENAND:
176 spl_onenand_load_image();
177 break;
178#endif
Stefan Roese33d34642012-08-27 12:50:59 +0200179#ifdef CONFIG_SPL_NOR_SUPPORT
180 case BOOT_DEVICE_NOR:
181 spl_nor_load_image();
182 break;
183#endif
Matt Porter24de3572012-01-31 12:03:57 +0000184#ifdef CONFIG_SPL_YMODEM_SUPPORT
185 case BOOT_DEVICE_UART:
186 spl_ymodem_load_image();
187 break;
188#endif
Tom Rinid4c4e0e2012-08-14 12:25:23 -0700189#ifdef CONFIG_SPL_SPI_SUPPORT
190 case BOOT_DEVICE_SPI:
Tom Rinia4cc1c42012-08-14 14:34:10 -0700191 spl_spi_load_image();
192 break;
Tom Rinid4c4e0e2012-08-14 12:25:23 -0700193#endif
Ilya Yanok7ac2fe22012-09-18 00:22:50 +0000194#ifdef CONFIG_SPL_ETH_SUPPORT
195 case BOOT_DEVICE_CPGMAC:
196#ifdef CONFIG_SPL_ETH_DEVICE
197 spl_net_load_image(CONFIG_SPL_ETH_DEVICE);
198#else
199 spl_net_load_image(NULL);
200#endif
201 break;
202#endif
Ilya Yanok62a81432013-02-05 11:36:24 +0000203#ifdef CONFIG_SPL_USBETH_SUPPORT
204 case BOOT_DEVICE_USBETH:
205 spl_net_load_image("usb_ether");
206 break;
207#endif
Aneesh V8cf686e2011-07-21 09:10:27 -0400208 default:
Tom Rini1292eaf2012-08-27 14:57:26 -0700209 debug("SPL: Un-supported Boot Device\n");
Aneesh V8cf686e2011-07-21 09:10:27 -0400210 hang();
Aneesh V8cf686e2011-07-21 09:10:27 -0400211 }
212
Simon Schwarz9ea5c6e2011-09-14 15:33:34 -0400213 switch (spl_image.os) {
Aneesh V8cf686e2011-07-21 09:10:27 -0400214 case IH_OS_U_BOOT:
215 debug("Jumping to U-Boot\n");
Aneesh V8cf686e2011-07-21 09:10:27 -0400216 break;
Simon Schwarz379c19a2012-03-15 04:01:38 +0000217#ifdef CONFIG_SPL_OS_BOOT
218 case IH_OS_LINUX:
219 debug("Jumping to Linux\n");
220 spl_board_prepare_for_linux();
221 jump_to_image_linux((void *)CONFIG_SYS_SPL_ARGS_ADDR);
Simon Schwarz379c19a2012-03-15 04:01:38 +0000222#endif
Aneesh V8cf686e2011-07-21 09:10:27 -0400223 default:
Tom Rini42120982012-08-27 14:58:28 -0700224 debug("Unsupported OS image.. Jumping nevertheless..\n");
Aneesh V8cf686e2011-07-21 09:10:27 -0400225 }
Allen Martina759f1e2012-10-19 21:08:22 +0000226 jump_to_image_no_args(&spl_image);
Aneesh Vbcae7212011-07-21 09:10:21 -0400227}
228
Tom Rini6507f132012-08-22 15:31:05 -0700229/*
230 * This requires UART clocks to be enabled. In order for this to work the
231 * caller must ensure that the gd pointer is valid.
232 */
Aneesh Vbcae7212011-07-21 09:10:21 -0400233void preloader_console_init(void)
234{
Aneesh Vbcae7212011-07-21 09:10:21 -0400235 gd->bd = &bdata;
Aneesh Vbcae7212011-07-21 09:10:21 -0400236 gd->baudrate = CONFIG_BAUDRATE;
237
Aneesh Vbcae7212011-07-21 09:10:21 -0400238 serial_init(); /* serial communications setup */
239
Ilya Yanokb88befa2011-11-01 13:16:03 +0000240 gd->have_console = 1;
241
Tom Rini026b2fe2012-08-14 12:06:43 -0700242 puts("\nU-Boot SPL " PLAIN_VERSION " (" U_BOOT_DATE " - " \
243 U_BOOT_TIME ")\n");
Tom Rini861a86f2012-08-13 11:37:56 -0700244#ifdef CONFIG_SPL_DISPLAY_PRINT
245 spl_display_print();
246#endif
Tom Rinicc3f7052011-10-04 04:59:23 +0000247}