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karo: merge with Ka-Ro specific tree for secure boot support
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1 /*
2  * (C) Copyright 2010
3  * Texas Instruments, <www.ti.com>
4  *
5  * Aneesh V <aneesh@ti.com>
6  *
7  * SPDX-License-Identifier:     GPL-2.0+
8  */
9 #include <common.h>
10 #include <dm.h>
11 #include <spl.h>
12 #include <asm/u-boot.h>
13 #include <nand.h>
14 #include <fat.h>
15 #include <version.h>
16 #include <i2c.h>
17 #include <image.h>
18 #include <malloc.h>
19 #include <dm/root.h>
20 #include <linux/compiler.h>
21
22 DECLARE_GLOBAL_DATA_PTR;
23
24 #ifndef CONFIG_SYS_UBOOT_START
25 #define CONFIG_SYS_UBOOT_START  CONFIG_SYS_TEXT_BASE
26 #endif
27 #ifndef CONFIG_SYS_MONITOR_LEN
28 /* Unknown U-Boot size, let's assume it will not be more than 200 KB */
29 #define CONFIG_SYS_MONITOR_LEN  (200 * 1024)
30 #endif
31
32 u32 *boot_params_ptr = NULL;
33 struct spl_image_info spl_image;
34
35 /* Define board data structure */
36 static bd_t bdata __attribute__ ((section(".data")));
37
38 /*
39  * Default function to determine if u-boot or the OS should
40  * be started. This implementation always returns 1.
41  *
42  * Please implement your own board specific funcion to do this.
43  *
44  * RETURN
45  * 0 to not start u-boot
46  * positive if u-boot should start
47  */
48 #ifdef CONFIG_SPL_OS_BOOT
49 __weak int spl_start_uboot(void)
50 {
51         puts("SPL: Please implement spl_start_uboot() for your board\n");
52         puts("SPL: Direct Linux boot not active!\n");
53         return 1;
54 }
55 #endif
56
57 /*
58  * Weak default function for board specific cleanup/preparation before
59  * Linux boot. Some boards/platforms might not need it, so just provide
60  * an empty stub here.
61  */
62 __weak void spl_board_prepare_for_linux(void)
63 {
64         /* Nothing to do! */
65 }
66
67 void spl_set_header_raw_uboot(void)
68 {
69         spl_image.size = CONFIG_SYS_MONITOR_LEN;
70         spl_image.entry_point = CONFIG_SYS_UBOOT_START;
71         spl_image.load_addr = CONFIG_SYS_TEXT_BASE;
72         spl_image.os = IH_OS_U_BOOT;
73         spl_image.name = "U-Boot";
74 }
75
76 void spl_parse_image_header(const struct image_header *header)
77 {
78         u32 header_size = sizeof(struct image_header);
79
80         if (image_get_magic(header) == IH_MAGIC) {
81                 if (spl_image.flags & SPL_COPY_PAYLOAD_ONLY) {
82                         /*
83                          * On some system (e.g. powerpc), the load-address and
84                          * entry-point is located at address 0. We can't load
85                          * to 0-0x40. So skip header in this case.
86                          */
87                         spl_image.load_addr = image_get_load(header);
88                         spl_image.entry_point = image_get_ep(header);
89                         spl_image.size = image_get_data_size(header);
90                 } else {
91                         spl_image.entry_point = image_get_load(header);
92                         /* Load including the header */
93                         spl_image.load_addr = spl_image.entry_point -
94                                 header_size;
95                         spl_image.size = image_get_data_size(header) +
96                                 header_size;
97                 }
98                 spl_image.os = image_get_os(header);
99                 spl_image.name = image_get_name(header);
100                 debug("spl: payload image: %.*s load addr: 0x%x size: %d\n",
101                         (int)sizeof(spl_image.name), spl_image.name,
102                         spl_image.load_addr, spl_image.size);
103         } else {
104                 /* Signature not found - assume u-boot.bin */
105                 debug("mkimage signature not found - ih_magic = %x\n",
106                         header->ih_magic);
107                 spl_set_header_raw_uboot();
108         }
109 }
110
111 __weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
112 {
113         typedef void __noreturn (*image_entry_noargs_t)(void);
114
115         image_entry_noargs_t image_entry =
116                         (image_entry_noargs_t) spl_image->entry_point;
117
118         debug("image entry point: 0x%X\n", spl_image->entry_point);
119         image_entry();
120 }
121
122 #ifdef CONFIG_SPL_RAM_DEVICE
123 static void spl_ram_load_image(void)
124 {
125         const struct image_header *header;
126
127         /*
128          * Get the header.  It will point to an address defined by handoff
129          * which will tell where the image located inside the flash. For
130          * now, it will temporary fixed to address pointed by U-Boot.
131          */
132         header = (struct image_header *)
133                 (CONFIG_SYS_TEXT_BASE - sizeof(struct image_header));
134
135         spl_parse_image_header(header);
136 }
137 #endif
138
139 void board_init_r(gd_t *dummy1, ulong dummy2)
140 {
141         u32 boot_device;
142         debug(">>spl:board_init_r()\n");
143
144 #if defined(CONFIG_SYS_SPL_MALLOC_START)
145         mem_malloc_init(CONFIG_SYS_SPL_MALLOC_START,
146                         CONFIG_SYS_SPL_MALLOC_SIZE);
147         gd->flags |= GD_FLG_FULL_MALLOC_INIT;
148 #elif defined(CONFIG_SYS_MALLOC_F_LEN)
149         gd->malloc_limit = gd->malloc_base + CONFIG_SYS_MALLOC_F_LEN;
150         gd->malloc_ptr = 0;
151 #endif
152 #ifdef CONFIG_SPL_DM
153         dm_init_and_scan(true);
154 #endif
155
156 #ifndef CONFIG_PPC
157         /*
158          * timer_init() does not exist on PPC systems. The timer is initialized
159          * and enabled (decrementer) in interrupt_init() here.
160          */
161         timer_init();
162 #endif
163
164 #ifdef CONFIG_SPL_BOARD_INIT
165         spl_board_init();
166 #endif
167
168         boot_device = spl_boot_device();
169         debug("boot device - %d\n", boot_device);
170         switch (boot_device) {
171 #ifdef CONFIG_SPL_RAM_DEVICE
172         case BOOT_DEVICE_RAM:
173                 spl_ram_load_image();
174                 break;
175 #endif
176 #ifdef CONFIG_SPL_MMC_SUPPORT
177         case BOOT_DEVICE_MMC1:
178         case BOOT_DEVICE_MMC2:
179         case BOOT_DEVICE_MMC2_2:
180                 spl_mmc_load_image();
181                 break;
182 #endif
183 #ifdef CONFIG_SPL_NAND_SUPPORT
184         case BOOT_DEVICE_NAND:
185                 if (spl_nand_load_image() == 0)
186                         break;
187                 /* fallthru in case of failure to activate ymodem download */
188 #endif
189 #ifdef CONFIG_SPL_ONENAND_SUPPORT
190         case BOOT_DEVICE_ONENAND:
191                 spl_onenand_load_image();
192                 break;
193 #endif
194 #ifdef CONFIG_SPL_NOR_SUPPORT
195         case BOOT_DEVICE_NOR:
196                 spl_nor_load_image();
197                 break;
198 #endif
199 #ifdef CONFIG_SPL_YMODEM_SUPPORT
200         case BOOT_DEVICE_UART:
201                 spl_ymodem_load_image();
202                 break;
203 #endif
204 #ifdef CONFIG_SPL_SPI_SUPPORT
205         case BOOT_DEVICE_SPI:
206                 spl_spi_load_image();
207                 break;
208 #endif
209 #ifdef CONFIG_SPL_ETH_SUPPORT
210         case BOOT_DEVICE_CPGMAC:
211 #ifdef CONFIG_SPL_ETH_DEVICE
212                 spl_net_load_image(CONFIG_SPL_ETH_DEVICE);
213 #else
214                 spl_net_load_image(NULL);
215 #endif
216                 break;
217 #endif
218 #ifdef CONFIG_SPL_USBETH_SUPPORT
219         case BOOT_DEVICE_USBETH:
220                 spl_net_load_image("usb_ether");
221                 break;
222 #endif
223 #ifdef CONFIG_SPL_USB_SUPPORT
224         case BOOT_DEVICE_USB:
225                 spl_usb_load_image();
226                 break;
227 #endif
228 #ifdef CONFIG_SPL_SATA_SUPPORT
229         case BOOT_DEVICE_SATA:
230                 spl_sata_load_image();
231                 break;
232 #endif
233         default:
234 #if defined(CONFIG_SPL_SERIAL_SUPPORT) && defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
235                 printf("SPL: Unsupported Boot Device %d\n", boot_device);
236 #endif
237                 hang();
238         }
239
240         switch (spl_image.os) {
241         case IH_OS_U_BOOT:
242                 debug("Jumping to U-Boot\n");
243                 break;
244 #ifdef CONFIG_SPL_OS_BOOT
245         case IH_OS_LINUX:
246                 debug("Jumping to Linux\n");
247                 spl_board_prepare_for_linux();
248                 jump_to_image_linux((void *)CONFIG_SYS_SPL_ARGS_ADDR);
249 #endif
250         default:
251                 debug("Unsupported OS image.. Jumping nevertheless..\n");
252         }
253 #if defined(CONFIG_SYS_MALLOC_F_LEN) && !defined(CONFIG_SYS_SPL_MALLOC_SIZE)
254         debug("SPL malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
255               gd->malloc_ptr / 1024);
256 #endif
257
258         jump_to_image_no_args(&spl_image);
259 }
260
261 /*
262  * This requires UART clocks to be enabled.  In order for this to work the
263  * caller must ensure that the gd pointer is valid.
264  */
265 void preloader_console_init(void)
266 {
267         gd->bd = &bdata;
268         gd->baudrate = CONFIG_BAUDRATE;
269
270         serial_init();          /* serial communications setup */
271
272         gd->have_console = 1;
273
274         puts("\nU-Boot SPL " PLAIN_VERSION " (" U_BOOT_DATE " - " \
275                         U_BOOT_TIME ")\n");
276 #ifdef CONFIG_SPL_DISPLAY_PRINT
277         spl_display_print();
278 #endif
279 }