blob: 6a5a1365a145af5e05f3e5063bb876873f2d8c25 [file] [log] [blame]
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 *
7 * See file CREDITS for list of people who contributed to this
8 * project.
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of
13 * the License, or (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
23 * MA 02111-1307 USA
24 */
25#include <common.h>
Tom Rini47f7bca2012-08-13 12:03:19 -070026#include <spl.h>
Aneesh Vbcae7212011-07-21 09:10:21 -040027#include <asm/u-boot.h>
Simon Schwarzbb085b82011-09-14 15:29:26 -040028#include <nand.h>
Aneesh V8cf686e2011-07-21 09:10:27 -040029#include <fat.h>
Simon Glassefb21722011-10-10 08:55:19 +000030#include <version.h>
Aneesh V8cf686e2011-07-21 09:10:27 -040031#include <i2c.h>
32#include <image.h>
Aneesh V2d01dd92011-10-21 12:29:34 -040033#include <malloc.h>
Andreas Müller761ca312012-01-04 15:26:24 +000034#include <linux/compiler.h>
Aneesh Vbcae7212011-07-21 09:10:21 -040035
36DECLARE_GLOBAL_DATA_PTR;
37
Stefan Roese3c6f8a02012-08-28 10:50:59 +020038#ifndef CONFIG_SYS_UBOOT_START
39#define CONFIG_SYS_UBOOT_START CONFIG_SYS_TEXT_BASE
40#endif
Stefano Babicae83d882012-08-23 12:46:16 +020041#ifndef CONFIG_SYS_MONITOR_LEN
42#define CONFIG_SYS_MONITOR_LEN (200 * 1024)
43#endif
44
Tom Rini47f7bca2012-08-13 12:03:19 -070045u32 *boot_params_ptr = NULL;
Simon Schwarz9ea5c6e2011-09-14 15:33:34 -040046struct spl_image_info spl_image;
47
Tom Rini6507f132012-08-22 15:31:05 -070048/* Define board data structure */
Aneesh Vbcae7212011-07-21 09:10:21 -040049static bd_t bdata __attribute__ ((section(".data")));
50
51inline void hang(void)
52{
53 puts("### ERROR ### Please RESET the board ###\n");
54 for (;;)
55 ;
56}
57
Simon Schwarz379c19a2012-03-15 04:01:38 +000058/*
59 * Default function to determine if u-boot or the OS should
60 * be started. This implementation always returns 1.
61 *
62 * Please implement your own board specific funcion to do this.
63 *
64 * RETURN
65 * 0 to not start u-boot
66 * positive if u-boot should start
67 */
68#ifdef CONFIG_SPL_OS_BOOT
69__weak int spl_start_uboot(void)
70{
Tom Rini026b2fe2012-08-14 12:06:43 -070071 puts("SPL: Please implement spl_start_uboot() for your board\n");
72 puts("SPL: Direct Linux boot not active!\n");
Simon Schwarz379c19a2012-03-15 04:01:38 +000073 return 1;
74}
75#endif
76
Stefan Roeseea8256f2012-08-23 08:34:21 +020077/*
78 * Weak default function for board specific cleanup/preparation before
79 * Linux boot. Some boards/platforms might not need it, so just provide
80 * an empty stub here.
81 */
82__weak void spl_board_prepare_for_linux(void)
83{
84 /* Nothing to do! */
85}
86
Simon Schwarz9ea5c6e2011-09-14 15:33:34 -040087void spl_parse_image_header(const struct image_header *header)
Aneesh V8cf686e2011-07-21 09:10:27 -040088{
89 u32 header_size = sizeof(struct image_header);
90
Stefan Roese77552b02012-08-27 12:50:57 +020091 if (image_get_magic(header) == IH_MAGIC) {
Stefan Roese022b4972012-08-27 12:50:58 +020092 if (spl_image.flags & SPL_COPY_PAYLOAD_ONLY) {
93 /*
94 * On some system (e.g. powerpc), the load-address and
95 * entry-point is located at address 0. We can't load
96 * to 0-0x40. So skip header in this case.
97 */
98 spl_image.load_addr = image_get_load(header);
99 spl_image.entry_point = image_get_ep(header);
100 spl_image.size = image_get_data_size(header);
101 } else {
102 spl_image.entry_point = image_get_load(header);
103 /* Load including the header */
104 spl_image.load_addr = spl_image.entry_point -
105 header_size;
106 spl_image.size = image_get_data_size(header) +
107 header_size;
108 }
Stefan Roese77552b02012-08-27 12:50:57 +0200109 spl_image.os = image_get_os(header);
110 spl_image.name = image_get_name(header);
Aneesh V8cf686e2011-07-21 09:10:27 -0400111 debug("spl: payload image: %s load addr: 0x%x size: %d\n",
Simon Schwarz9ea5c6e2011-09-14 15:33:34 -0400112 spl_image.name, spl_image.load_addr, spl_image.size);
Aneesh V8cf686e2011-07-21 09:10:27 -0400113 } else {
114 /* Signature not found - assume u-boot.bin */
Tom Rini026b2fe2012-08-14 12:06:43 -0700115 debug("mkimage signature not found - ih_magic = %x\n",
Aneesh V8cf686e2011-07-21 09:10:27 -0400116 header->ih_magic);
Aneesh V8cf686e2011-07-21 09:10:27 -0400117 /* Let's assume U-Boot will not be more than 200 KB */
Stefano Babicae83d882012-08-23 12:46:16 +0200118 spl_image.size = CONFIG_SYS_MONITOR_LEN;
Stefan Roese3c6f8a02012-08-28 10:50:59 +0200119 spl_image.entry_point = CONFIG_SYS_UBOOT_START;
Simon Schwarz9ea5c6e2011-09-14 15:33:34 -0400120 spl_image.load_addr = CONFIG_SYS_TEXT_BASE;
121 spl_image.os = IH_OS_U_BOOT;
122 spl_image.name = "U-Boot";
Aneesh V8cf686e2011-07-21 09:10:27 -0400123 }
124}
125
Allen Martina759f1e2012-10-19 21:08:22 +0000126__weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
Aneesh V8cf686e2011-07-21 09:10:27 -0400127{
Tom Riniad1820a2012-02-14 07:29:39 +0000128 typedef void __noreturn (*image_entry_noargs_t)(u32 *);
Aneesh V8cf686e2011-07-21 09:10:27 -0400129 image_entry_noargs_t image_entry =
Allen Martina759f1e2012-10-19 21:08:22 +0000130 (image_entry_noargs_t) spl_image->entry_point;
Aneesh V8cf686e2011-07-21 09:10:27 -0400131
Allen Martina759f1e2012-10-19 21:08:22 +0000132 debug("image entry point: 0x%X\n", spl_image->entry_point);
Sricharan78f455c2011-11-15 09:50:03 -0500133 /* Pass the saved boot_params from rom code */
134#if defined(CONFIG_VIRTIO) || defined(CONFIG_ZEBU)
Anatolij Gustschinb0a86a22011-12-03 06:46:13 +0000135 image_entry = (image_entry_noargs_t)0x80100000;
Sricharan78f455c2011-11-15 09:50:03 -0500136#endif
Anatolij Gustschinb0a86a22011-12-03 06:46:13 +0000137 u32 boot_params_ptr_addr = (u32)&boot_params_ptr;
138 image_entry((u32 *)boot_params_ptr_addr);
Aneesh V8cf686e2011-07-21 09:10:27 -0400139}
140
Pavel Machekc57b9532012-08-30 22:42:11 +0200141#ifdef CONFIG_SPL_RAM_DEVICE
142static void spl_ram_load_image(void)
143{
144 const struct image_header *header;
145
146 /*
147 * Get the header. It will point to an address defined by handoff
148 * which will tell where the image located inside the flash. For
149 * now, it will temporary fixed to address pointed by U-Boot.
150 */
151 header = (struct image_header *)
152 (CONFIG_SYS_TEXT_BASE - sizeof(struct image_header));
153
154 spl_parse_image_header(header);
155}
156#endif
157
Tom Rini6507f132012-08-22 15:31:05 -0700158void board_init_r(gd_t *dummy1, ulong dummy2)
Aneesh Vbcae7212011-07-21 09:10:21 -0400159{
Aneesh V8cf686e2011-07-21 09:10:27 -0400160 u32 boot_device;
161 debug(">>spl:board_init_r()\n");
162
Tom Rini24dafad2012-08-13 14:13:07 -0700163#ifdef CONFIG_SYS_SPL_MALLOC_START
Aneesh V2d01dd92011-10-21 12:29:34 -0400164 mem_malloc_init(CONFIG_SYS_SPL_MALLOC_START,
165 CONFIG_SYS_SPL_MALLOC_SIZE);
Tom Rini24dafad2012-08-13 14:13:07 -0700166#endif
Aneesh V2d01dd92011-10-21 12:29:34 -0400167
Stefan Roeseea8256f2012-08-23 08:34:21 +0200168#ifndef CONFIG_PPC
169 /*
170 * timer_init() does not exist on PPC systems. The timer is initialized
171 * and enabled (decrementer) in interrupt_init() here.
172 */
Ilya Yanok4063c772012-09-17 10:26:26 +0000173 timer_init();
Stefan Roeseea8256f2012-08-23 08:34:21 +0200174#endif
Ilya Yanok4063c772012-09-17 10:26:26 +0000175
Tom Riniee08a822011-11-23 05:13:06 +0000176#ifdef CONFIG_SPL_BOARD_INIT
177 spl_board_init();
178#endif
179
Tom Rini8e1b8362012-08-13 12:53:23 -0700180 boot_device = spl_boot_device();
Aneesh V8cf686e2011-07-21 09:10:27 -0400181 debug("boot device - %d\n", boot_device);
182 switch (boot_device) {
Pavel Machekc57b9532012-08-30 22:42:11 +0200183#ifdef CONFIG_SPL_RAM_DEVICE
184 case BOOT_DEVICE_RAM:
185 spl_ram_load_image();
186 break;
187#endif
Simon Schwarzbb085b82011-09-14 15:29:26 -0400188#ifdef CONFIG_SPL_MMC_SUPPORT
Aneesh V8cf686e2011-07-21 09:10:27 -0400189 case BOOT_DEVICE_MMC1:
190 case BOOT_DEVICE_MMC2:
Balaji T Kf75231b2012-03-12 02:25:47 +0000191 case BOOT_DEVICE_MMC2_2:
Simon Schwarz9ea5c6e2011-09-14 15:33:34 -0400192 spl_mmc_load_image();
Aneesh V8cf686e2011-07-21 09:10:27 -0400193 break;
Simon Schwarzbb085b82011-09-14 15:29:26 -0400194#endif
195#ifdef CONFIG_SPL_NAND_SUPPORT
196 case BOOT_DEVICE_NAND:
Simon Schwarz9ea5c6e2011-09-14 15:33:34 -0400197 spl_nand_load_image();
Simon Schwarzbb085b82011-09-14 15:29:26 -0400198 break;
199#endif
Stefan Roese33d34642012-08-27 12:50:59 +0200200#ifdef CONFIG_SPL_NOR_SUPPORT
201 case BOOT_DEVICE_NOR:
202 spl_nor_load_image();
203 break;
204#endif
Matt Porter24de3572012-01-31 12:03:57 +0000205#ifdef CONFIG_SPL_YMODEM_SUPPORT
206 case BOOT_DEVICE_UART:
207 spl_ymodem_load_image();
208 break;
209#endif
Tom Rinid4c4e0e2012-08-14 12:25:23 -0700210#ifdef CONFIG_SPL_SPI_SUPPORT
211 case BOOT_DEVICE_SPI:
Tom Rinia4cc1c42012-08-14 14:34:10 -0700212 spl_spi_load_image();
213 break;
Tom Rinid4c4e0e2012-08-14 12:25:23 -0700214#endif
Ilya Yanok7ac2fe22012-09-18 00:22:50 +0000215#ifdef CONFIG_SPL_ETH_SUPPORT
216 case BOOT_DEVICE_CPGMAC:
217#ifdef CONFIG_SPL_ETH_DEVICE
218 spl_net_load_image(CONFIG_SPL_ETH_DEVICE);
219#else
220 spl_net_load_image(NULL);
221#endif
222 break;
223#endif
Ilya Yanok62a81432013-02-05 11:36:24 +0000224#ifdef CONFIG_SPL_USBETH_SUPPORT
225 case BOOT_DEVICE_USBETH:
226 spl_net_load_image("usb_ether");
227 break;
228#endif
Aneesh V8cf686e2011-07-21 09:10:27 -0400229 default:
Tom Rini1292eaf2012-08-27 14:57:26 -0700230 debug("SPL: Un-supported Boot Device\n");
Aneesh V8cf686e2011-07-21 09:10:27 -0400231 hang();
Aneesh V8cf686e2011-07-21 09:10:27 -0400232 }
233
Simon Schwarz9ea5c6e2011-09-14 15:33:34 -0400234 switch (spl_image.os) {
Aneesh V8cf686e2011-07-21 09:10:27 -0400235 case IH_OS_U_BOOT:
236 debug("Jumping to U-Boot\n");
Aneesh V8cf686e2011-07-21 09:10:27 -0400237 break;
Simon Schwarz379c19a2012-03-15 04:01:38 +0000238#ifdef CONFIG_SPL_OS_BOOT
239 case IH_OS_LINUX:
240 debug("Jumping to Linux\n");
241 spl_board_prepare_for_linux();
242 jump_to_image_linux((void *)CONFIG_SYS_SPL_ARGS_ADDR);
Simon Schwarz379c19a2012-03-15 04:01:38 +0000243#endif
Aneesh V8cf686e2011-07-21 09:10:27 -0400244 default:
Tom Rini42120982012-08-27 14:58:28 -0700245 debug("Unsupported OS image.. Jumping nevertheless..\n");
Aneesh V8cf686e2011-07-21 09:10:27 -0400246 }
Allen Martina759f1e2012-10-19 21:08:22 +0000247 jump_to_image_no_args(&spl_image);
Aneesh Vbcae7212011-07-21 09:10:21 -0400248}
249
Tom Rini6507f132012-08-22 15:31:05 -0700250/*
251 * This requires UART clocks to be enabled. In order for this to work the
252 * caller must ensure that the gd pointer is valid.
253 */
Aneesh Vbcae7212011-07-21 09:10:21 -0400254void preloader_console_init(void)
255{
Aneesh Vbcae7212011-07-21 09:10:21 -0400256 gd->bd = &bdata;
Aneesh Vbcae7212011-07-21 09:10:21 -0400257 gd->baudrate = CONFIG_BAUDRATE;
258
Aneesh Vbcae7212011-07-21 09:10:21 -0400259 serial_init(); /* serial communications setup */
260
Ilya Yanokb88befa2011-11-01 13:16:03 +0000261 gd->have_console = 1;
262
Tom Rini026b2fe2012-08-14 12:06:43 -0700263 puts("\nU-Boot SPL " PLAIN_VERSION " (" U_BOOT_DATE " - " \
264 U_BOOT_TIME ")\n");
Tom Rini861a86f2012-08-13 11:37:56 -0700265#ifdef CONFIG_SPL_DISPLAY_PRINT
266 spl_display_print();
267#endif
Tom Rinicc3f7052011-10-04 04:59:23 +0000268}