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bcae7211 A |
1 | /* |
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> | |
47f7bcae | 26 | #include <spl.h> |
bcae7211 | 27 | #include <asm/u-boot.h> |
bb085b87 | 28 | #include <nand.h> |
8cf686e1 | 29 | #include <fat.h> |
efb2172e | 30 | #include <version.h> |
8cf686e1 A |
31 | #include <i2c.h> |
32 | #include <image.h> | |
2d01dd95 | 33 | #include <malloc.h> |
761ca31e | 34 | #include <linux/compiler.h> |
bcae7211 A |
35 | |
36 | DECLARE_GLOBAL_DATA_PTR; | |
37 | ||
3c6f8a0d SR |
38 | #ifndef CONFIG_SYS_UBOOT_START |
39 | #define CONFIG_SYS_UBOOT_START CONFIG_SYS_TEXT_BASE | |
40 | #endif | |
ae83d882 SB |
41 | #ifndef CONFIG_SYS_MONITOR_LEN |
42 | #define CONFIG_SYS_MONITOR_LEN (200 * 1024) | |
43 | #endif | |
44 | ||
47f7bcae | 45 | u32 *boot_params_ptr = NULL; |
9ea5c6ef SS |
46 | struct spl_image_info spl_image; |
47 | ||
6507f133 | 48 | /* Define board data structure */ |
bcae7211 A |
49 | static bd_t bdata __attribute__ ((section(".data"))); |
50 | ||
51 | inline void hang(void) | |
52 | { | |
53 | puts("### ERROR ### Please RESET the board ###\n"); | |
54 | for (;;) | |
55 | ; | |
56 | } | |
57 | ||
379c19ab SS |
58 | /* |
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 | { | |
026b2fe3 TR |
71 | puts("SPL: Please implement spl_start_uboot() for your board\n"); |
72 | puts("SPL: Direct Linux boot not active!\n"); | |
379c19ab SS |
73 | return 1; |
74 | } | |
75 | #endif | |
76 | ||
ea8256f0 SR |
77 | /* |
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 | ||
9ea5c6ef | 87 | void spl_parse_image_header(const struct image_header *header) |
8cf686e1 A |
88 | { |
89 | u32 header_size = sizeof(struct image_header); | |
90 | ||
77552b06 | 91 | if (image_get_magic(header) == IH_MAGIC) { |
022b4975 SR |
92 | 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 | } | |
77552b06 SR |
109 | spl_image.os = image_get_os(header); |
110 | spl_image.name = image_get_name(header); | |
8cf686e1 | 111 | debug("spl: payload image: %s load addr: 0x%x size: %d\n", |
9ea5c6ef | 112 | spl_image.name, spl_image.load_addr, spl_image.size); |
8cf686e1 A |
113 | } else { |
114 | /* Signature not found - assume u-boot.bin */ | |
026b2fe3 | 115 | debug("mkimage signature not found - ih_magic = %x\n", |
8cf686e1 | 116 | header->ih_magic); |
8cf686e1 | 117 | /* Let's assume U-Boot will not be more than 200 KB */ |
ae83d882 | 118 | spl_image.size = CONFIG_SYS_MONITOR_LEN; |
3c6f8a0d | 119 | spl_image.entry_point = CONFIG_SYS_UBOOT_START; |
9ea5c6ef SS |
120 | spl_image.load_addr = CONFIG_SYS_TEXT_BASE; |
121 | spl_image.os = IH_OS_U_BOOT; | |
122 | spl_image.name = "U-Boot"; | |
8cf686e1 A |
123 | } |
124 | } | |
125 | ||
a759f1e0 | 126 | __weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image) |
8cf686e1 | 127 | { |
ad1820a3 | 128 | typedef void __noreturn (*image_entry_noargs_t)(u32 *); |
8cf686e1 | 129 | image_entry_noargs_t image_entry = |
a759f1e0 | 130 | (image_entry_noargs_t) spl_image->entry_point; |
8cf686e1 | 131 | |
a759f1e0 | 132 | debug("image entry point: 0x%X\n", spl_image->entry_point); |
78f455c0 S |
133 | /* Pass the saved boot_params from rom code */ |
134 | #if defined(CONFIG_VIRTIO) || defined(CONFIG_ZEBU) | |
b0a86a27 | 135 | image_entry = (image_entry_noargs_t)0x80100000; |
78f455c0 | 136 | #endif |
b0a86a27 AG |
137 | u32 boot_params_ptr_addr = (u32)&boot_params_ptr; |
138 | image_entry((u32 *)boot_params_ptr_addr); | |
8cf686e1 A |
139 | } |
140 | ||
c57b953d PM |
141 | #ifdef CONFIG_SPL_RAM_DEVICE |
142 | static 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 | ||
6507f133 | 158 | void board_init_r(gd_t *dummy1, ulong dummy2) |
bcae7211 | 159 | { |
8cf686e1 A |
160 | u32 boot_device; |
161 | debug(">>spl:board_init_r()\n"); | |
162 | ||
24dafad5 | 163 | #ifdef CONFIG_SYS_SPL_MALLOC_START |
2d01dd95 A |
164 | mem_malloc_init(CONFIG_SYS_SPL_MALLOC_START, |
165 | CONFIG_SYS_SPL_MALLOC_SIZE); | |
24dafad5 | 166 | #endif |
2d01dd95 | 167 | |
ea8256f0 SR |
168 | #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 | */ | |
4063c77d | 173 | timer_init(); |
ea8256f0 | 174 | #endif |
4063c77d | 175 | |
ee08a826 TR |
176 | #ifdef CONFIG_SPL_BOARD_INIT |
177 | spl_board_init(); | |
178 | #endif | |
179 | ||
8e1b836e | 180 | boot_device = spl_boot_device(); |
8cf686e1 A |
181 | debug("boot device - %d\n", boot_device); |
182 | switch (boot_device) { | |
c57b953d PM |
183 | #ifdef CONFIG_SPL_RAM_DEVICE |
184 | case BOOT_DEVICE_RAM: | |
185 | spl_ram_load_image(); | |
186 | break; | |
187 | #endif | |
bb085b87 | 188 | #ifdef CONFIG_SPL_MMC_SUPPORT |
8cf686e1 A |
189 | case BOOT_DEVICE_MMC1: |
190 | case BOOT_DEVICE_MMC2: | |
f75231b7 | 191 | case BOOT_DEVICE_MMC2_2: |
9ea5c6ef | 192 | spl_mmc_load_image(); |
8cf686e1 | 193 | break; |
bb085b87 SS |
194 | #endif |
195 | #ifdef CONFIG_SPL_NAND_SUPPORT | |
196 | case BOOT_DEVICE_NAND: | |
9ea5c6ef | 197 | spl_nand_load_image(); |
bb085b87 | 198 | break; |
24de357a | 199 | #endif |
33d34646 SR |
200 | #ifdef CONFIG_SPL_NOR_SUPPORT |
201 | case BOOT_DEVICE_NOR: | |
202 | spl_nor_load_image(); | |
203 | break; | |
204 | #endif | |
24de357a MP |
205 | #ifdef CONFIG_SPL_YMODEM_SUPPORT |
206 | case BOOT_DEVICE_UART: | |
207 | spl_ymodem_load_image(); | |
208 | break; | |
d4c4e0e1 TR |
209 | #endif |
210 | #ifdef CONFIG_SPL_SPI_SUPPORT | |
211 | case BOOT_DEVICE_SPI: | |
a4cc1c48 TR |
212 | spl_spi_load_image(); |
213 | break; | |
7ac2fe2d IY |
214 | #endif |
215 | #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; | |
62a81431 IY |
223 | #endif |
224 | #ifdef CONFIG_SPL_USBETH_SUPPORT | |
225 | case BOOT_DEVICE_USBETH: | |
226 | spl_net_load_image("usb_ether"); | |
227 | break; | |
bb085b87 | 228 | #endif |
8cf686e1 | 229 | default: |
1292eaf3 | 230 | debug("SPL: Un-supported Boot Device\n"); |
8cf686e1 | 231 | hang(); |
8cf686e1 A |
232 | } |
233 | ||
9ea5c6ef | 234 | switch (spl_image.os) { |
8cf686e1 A |
235 | case IH_OS_U_BOOT: |
236 | debug("Jumping to U-Boot\n"); | |
8cf686e1 | 237 | break; |
379c19ab SS |
238 | #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); | |
379c19ab | 243 | #endif |
8cf686e1 | 244 | default: |
42120981 | 245 | debug("Unsupported OS image.. Jumping nevertheless..\n"); |
8cf686e1 | 246 | } |
a759f1e0 | 247 | jump_to_image_no_args(&spl_image); |
bcae7211 A |
248 | } |
249 | ||
6507f133 TR |
250 | /* |
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 | */ | |
bcae7211 A |
254 | void preloader_console_init(void) |
255 | { | |
bcae7211 | 256 | gd->bd = &bdata; |
bcae7211 A |
257 | gd->baudrate = CONFIG_BAUDRATE; |
258 | ||
bcae7211 A |
259 | serial_init(); /* serial communications setup */ |
260 | ||
b88befa5 IY |
261 | gd->have_console = 1; |
262 | ||
026b2fe3 TR |
263 | puts("\nU-Boot SPL " PLAIN_VERSION " (" U_BOOT_DATE " - " \ |
264 | U_BOOT_TIME ")\n"); | |
861a86f4 TR |
265 | #ifdef CONFIG_SPL_DISPLAY_PRINT |
266 | spl_display_print(); | |
267 | #endif | |
cc3f7058 | 268 | } |