Alek Du | b379eef | 2008-05-21 13:37:04 +0800 | [diff] [blame] | 1 | /* |
| 2 | * bootstub 32 bit entry setting routings |
Alek Du | f21b9a3 | 2010-05-27 14:23:43 +0800 | [diff] [blame] | 3 | * |
| 4 | * Copyright (C) 2008-2010 Intel Corporation. |
| 5 | * Author: Alek Du <alek.du@intel.com> |
Alek Du | b379eef | 2008-05-21 13:37:04 +0800 | [diff] [blame] | 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify it |
| 8 | * under the terms and conditions of the GNU General Public License, |
| 9 | * version 2, as published by the Free Software Foundation. |
| 10 | * |
| 11 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 14 | * more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License along with |
| 17 | * this program; if not, write to the Free Software Foundation, Inc., |
| 18 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
| 19 | * |
Alek Du | b7f7baf | 2008-05-13 16:23:15 +0800 | [diff] [blame] | 20 | */ |
| 21 | |
| 22 | #include "types.h" |
| 23 | #include "bootstub.h" |
| 24 | #include "bootparam.h" |
Alek Du | c8496d1 | 2008-07-10 14:46:17 +0800 | [diff] [blame] | 25 | #include "spi-uart.h" |
Mark F. Brown | 90847a8 | 2011-09-07 18:06:24 -0400 | [diff] [blame] | 26 | #include "ssp-uart.h" |
Evgeny Kalugin | 8e8bf00 | 2013-10-24 11:21:07 +0300 | [diff] [blame] | 27 | #include "mb.h" |
Feng Tang | 7cc52cd | 2009-06-01 11:23:28 +0800 | [diff] [blame] | 28 | #include "sfi.h" |
Florent Auger | b5c97f5 | 2014-07-09 12:54:50 +0200 | [diff] [blame] | 29 | #include "bootimg.h" |
Alek Du | c8496d1 | 2008-07-10 14:46:17 +0800 | [diff] [blame] | 30 | |
Evgeny Kalugin | 8e8bf00 | 2013-10-24 11:21:07 +0300 | [diff] [blame] | 31 | #include <stdint.h> |
| 32 | #include <stddef.h> |
| 33 | #include "imr_toc.h" |
| 34 | |
| 35 | #define PAGE_SIZE_MASK 0xFFF |
| 36 | #define MASK_1K 0x3FF |
| 37 | #define PAGE_ALIGN_FWD(x) ((x + PAGE_SIZE_MASK) & ~PAGE_SIZE_MASK) |
| 38 | #define PAGE_ALIGN_BACK(x) ((x) & ~PAGE_SIZE_MASK) |
| 39 | |
| 40 | #define IMR_START_ADDRESS(x) (((x) & 0xFFFFFFFC) << 8) |
| 41 | #define IMR_END_ADDRESS(x) ((x == 0) ? (x) : ((((x) & 0xFFFFFFFC) << 8) | MASK_1K)) |
| 42 | |
| 43 | #define IMR6_START_ADDRESS IMR_START_ADDRESS(*((u32 *)0xff108160)) |
| 44 | #define IMR6_END_ADDRESS IMR_END_ADDRESS(*((u32 *)0xff108164)) |
| 45 | #define IMR7_START_ADDRESS IMR_START_ADDRESS(*((u32 *)0xff108170)) |
| 46 | #define IMR7_END_ADDRESS IMR_END_ADDRESS(*((u32 *)0xff108174)) |
| 47 | |
| 48 | #define FATAL_HANG() { asm("cli"); while (1) { asm("nop"); } } |
| 49 | |
Eric Ernst | aecaba3 | 2013-04-02 12:02:59 -0700 | [diff] [blame] | 50 | extern int no_uart_used; |
| 51 | |
Evgeny Kalugin | 8e8bf00 | 2013-10-24 11:21:07 +0300 | [diff] [blame] | 52 | extern imr_toc_t imr6_toc; |
| 53 | static u32 imr7_size; |
| 54 | |
| 55 | static u32 sps_load_adrs; |
| 56 | |
| 57 | static memory_map_t mb_mmap[E820MAX]; |
| 58 | u32 mb_magic, mb_info; |
| 59 | |
| 60 | struct gdt_ptr { |
| 61 | u16 len; |
| 62 | u32 ptr; |
| 63 | } __attribute__((packed)); |
| 64 | |
Alek Du | b7f7baf | 2008-05-13 16:23:15 +0800 | [diff] [blame] | 65 | static void *memcpy(void *dest, const void *src, size_t count) |
| 66 | { |
| 67 | char *tmp = dest; |
| 68 | const char *s = src; |
Alek Du | a24ea5c | 2009-05-26 09:56:47 +0800 | [diff] [blame] | 69 | size_t _count = count / 4; |
Alek Du | b7f7baf | 2008-05-13 16:23:15 +0800 | [diff] [blame] | 70 | |
Alek Du | a24ea5c | 2009-05-26 09:56:47 +0800 | [diff] [blame] | 71 | while (_count--) { |
| 72 | *(long *)tmp = *(long *)s; |
| 73 | tmp += 4; |
| 74 | s += 4; |
| 75 | } |
| 76 | count %= 4; |
Alek Du | b7f7baf | 2008-05-13 16:23:15 +0800 | [diff] [blame] | 77 | while (count--) |
| 78 | *tmp++ = *s++; |
| 79 | return dest; |
| 80 | } |
| 81 | |
Alek Du | a24ea5c | 2009-05-26 09:56:47 +0800 | [diff] [blame] | 82 | static void *memset(void *s, unsigned char c, size_t count) |
Alek Du | b7f7baf | 2008-05-13 16:23:15 +0800 | [diff] [blame] | 83 | { |
| 84 | char *xs = s; |
Alek Du | a24ea5c | 2009-05-26 09:56:47 +0800 | [diff] [blame] | 85 | size_t _count = count / 4; |
| 86 | unsigned long _c = c << 24 | c << 16 | c << 8 | c; |
Alek Du | b7f7baf | 2008-05-13 16:23:15 +0800 | [diff] [blame] | 87 | |
Alek Du | a24ea5c | 2009-05-26 09:56:47 +0800 | [diff] [blame] | 88 | while (_count--) { |
| 89 | *(long *)xs = _c; |
| 90 | xs += 4; |
| 91 | } |
| 92 | count %= 4; |
Alek Du | b7f7baf | 2008-05-13 16:23:15 +0800 | [diff] [blame] | 93 | while (count--) |
| 94 | *xs++ = c; |
| 95 | return s; |
| 96 | } |
| 97 | |
Alek Du | d6f7f14 | 2008-05-14 16:59:04 +0800 | [diff] [blame] | 98 | static size_t strnlen(const char *s, size_t maxlen) |
| 99 | { |
| 100 | const char *es = s; |
| 101 | while (*es && maxlen) { |
| 102 | es++; |
| 103 | maxlen--; |
| 104 | } |
| 105 | |
| 106 | return (es - s); |
| 107 | } |
| 108 | |
Evgeny Kalugin | 8e8bf00 | 2013-10-24 11:21:07 +0300 | [diff] [blame] | 109 | static const char *strnchr(const char *s, int c, size_t maxlen) |
| 110 | { |
| 111 | int i; |
| 112 | for (i = 0; i < maxlen && *s != c; s++, i++) |
| 113 | ; |
| 114 | return s; |
| 115 | } |
| 116 | |
| 117 | int strncmp(const char *cs, const char *ct, size_t count) |
| 118 | { |
| 119 | unsigned char c1, c2; |
| 120 | |
| 121 | while (count) { |
| 122 | c1 = *cs++; |
| 123 | c2 = *ct++; |
| 124 | if (c1 != c2) |
| 125 | return c1 < c2 ? -1 : 1; |
| 126 | if (!c1) |
| 127 | break; |
| 128 | count--; |
| 129 | } |
| 130 | return 0; |
| 131 | } |
| 132 | |
Florent Auger | b5c97f5 | 2014-07-09 12:54:50 +0200 | [diff] [blame] | 133 | static inline int is_image_aosp(unsigned char *magic) |
| 134 | { |
| 135 | return !strncmp((char *)magic, (char *)BOOT_MAGIC, sizeof(BOOT_MAGIC)-1); |
| 136 | } |
| 137 | |
Alek Du | b7f7baf | 2008-05-13 16:23:15 +0800 | [diff] [blame] | 138 | static void setup_boot_params(struct boot_params *bp, struct setup_header *sh) |
| 139 | { |
Alek Du | acca6fb | 2008-06-02 14:19:57 +0800 | [diff] [blame] | 140 | bp->screen_info.orig_video_mode = 0; |
| 141 | bp->screen_info.orig_video_lines = 0; |
| 142 | bp->screen_info.orig_video_cols = 0; |
Alek Du | 07cd7e2 | 2008-05-22 16:36:16 +0800 | [diff] [blame] | 143 | bp->alt_mem_k = 128*1024; // hard coded 128M mem here, since SFI will override it |
Alek Du | 2c4ebec | 2008-05-13 16:56:23 +0800 | [diff] [blame] | 144 | memcpy(&bp->hdr, sh, sizeof (struct setup_header)); |
Alek Du | 853e56b | 2008-05-16 16:44:31 +0800 | [diff] [blame] | 145 | bp->hdr.type_of_loader = 0xff; //bootstub is unknown bootloader for kernel :) |
Evgeny Kalugin | 8e8bf00 | 2013-10-24 11:21:07 +0300 | [diff] [blame] | 146 | bp->hdr.hardware_subarch = X86_SUBARCH_MRST; |
| 147 | } |
| 148 | |
| 149 | static u32 bzImage_setup(struct boot_params *bp, struct setup_header *sh) |
| 150 | { |
| 151 | void *cmdline = (void *)BOOT_CMDLINE_OFFSET; |
Florent Auger | b5c97f5 | 2014-07-09 12:54:50 +0200 | [diff] [blame] | 152 | struct boot_img_hdr *aosp = (struct boot_img_hdr *)AOSP_HEADER_ADDRESS; |
Evgeny Kalugin | 8e8bf00 | 2013-10-24 11:21:07 +0300 | [diff] [blame] | 153 | size_t cmdline_len; |
Florent Auger | b5c97f5 | 2014-07-09 12:54:50 +0200 | [diff] [blame] | 154 | u8 *initramfs, *ptr; |
Evgeny Kalugin | 8e8bf00 | 2013-10-24 11:21:07 +0300 | [diff] [blame] | 155 | |
Florent Auger | b5c97f5 | 2014-07-09 12:54:50 +0200 | [diff] [blame] | 156 | if (is_image_aosp(aosp->magic)) { |
| 157 | ptr = (u8*)aosp->kernel_addr; |
| 158 | cmdline_len = strnlen((const char *)aosp->cmdline, sizeof(aosp->cmdline)); |
Evgeny Kalugin | 8e8bf00 | 2013-10-24 11:21:07 +0300 | [diff] [blame] | 159 | |
Florent Auger | b5c97f5 | 2014-07-09 12:54:50 +0200 | [diff] [blame] | 160 | /* |
| 161 | * Copy the command line to be after bootparams so that it won't be |
| 162 | * overwritten by the kernel executable. |
| 163 | */ |
| 164 | memset(cmdline, 0, sizeof(aosp->cmdline)); |
| 165 | memcpy(cmdline, (const void *)aosp->cmdline, cmdline_len); |
Evgeny Kalugin | 8e8bf00 | 2013-10-24 11:21:07 +0300 | [diff] [blame] | 166 | |
Florent Auger | b5c97f5 | 2014-07-09 12:54:50 +0200 | [diff] [blame] | 167 | bp->hdr.ramdisk_size = aosp->ramdisk_size; |
| 168 | |
| 169 | initramfs = (u8 *)aosp->ramdisk_addr; |
| 170 | } else { |
| 171 | ptr = (u8*)BZIMAGE_OFFSET; |
| 172 | cmdline_len = strnlen((const char *)CMDLINE_OFFSET, CMDLINE_SIZE); |
| 173 | /* |
| 174 | * Copy the command line to be after bootparams so that it won't be |
| 175 | * overwritten by the kernel executable. |
| 176 | */ |
| 177 | memset(cmdline, 0, CMDLINE_SIZE); |
| 178 | memcpy(cmdline, (const void *)CMDLINE_OFFSET, cmdline_len); |
| 179 | |
| 180 | bp->hdr.ramdisk_size = *(u32 *)INITRD_SIZE_OFFSET; |
| 181 | |
| 182 | initramfs = (u8 *)BZIMAGE_OFFSET + *(u32 *)BZIMAGE_SIZE_OFFSET; |
| 183 | } |
Evgeny Kalugin | 8e8bf00 | 2013-10-24 11:21:07 +0300 | [diff] [blame] | 184 | |
| 185 | bp->hdr.cmd_line_ptr = BOOT_CMDLINE_OFFSET; |
| 186 | bp->hdr.cmdline_size = cmdline_len; |
Alek Du | 853e56b | 2008-05-16 16:44:31 +0800 | [diff] [blame] | 187 | bp->hdr.ramdisk_image = (bp->alt_mem_k*1024 - bp->hdr.ramdisk_size) & 0xFFFFF000; |
Evgeny Kalugin | 8e8bf00 | 2013-10-24 11:21:07 +0300 | [diff] [blame] | 188 | |
Alek Du | 9843d27 | 2009-10-23 09:59:37 +0800 | [diff] [blame] | 189 | if (*initramfs) { |
| 190 | bs_printk("Relocating initramfs to high memory ...\n"); |
| 191 | memcpy((u8*)bp->hdr.ramdisk_image, initramfs, bp->hdr.ramdisk_size); |
| 192 | } else { |
| 193 | bs_printk("Won't relocate initramfs, are you in SLE?\n"); |
| 194 | } |
Evgeny Kalugin | 8e8bf00 | 2013-10-24 11:21:07 +0300 | [diff] [blame] | 195 | |
| 196 | while (1){ |
| 197 | if (*(u32 *)ptr == SETUP_SIGNATURE && *(u32 *)(ptr+4) == 0) |
| 198 | break; |
| 199 | ptr++; |
Bin Gao | 923fa8d | 2013-03-30 00:27:10 -0700 | [diff] [blame] | 200 | } |
Evgeny Kalugin | 8e8bf00 | 2013-10-24 11:21:07 +0300 | [diff] [blame] | 201 | ptr+=4; |
| 202 | return (((unsigned int)ptr+511)/512)*512; |
Alek Du | b7f7baf | 2008-05-13 16:23:15 +0800 | [diff] [blame] | 203 | } |
| 204 | |
Jeremy Compostella | 3661270 | 2014-08-14 13:17:40 +0200 | [diff] [blame] | 205 | static inline void cpuid(u32 op, u32 regs[4]) |
Alek Du | b7f7baf | 2008-05-13 16:23:15 +0800 | [diff] [blame] | 206 | { |
Jeremy Compostella | 3661270 | 2014-08-14 13:17:40 +0200 | [diff] [blame] | 207 | __asm__ volatile ( |
| 208 | "mov %%ebx, %%edi\n" |
| 209 | "cpuid\n" |
| 210 | "xchg %%edi, %%ebx\n" |
| 211 | : "=a"(regs[0]), "=D"(regs[1]), "=c"(regs[2]), "=d"(regs[3]) |
| 212 | : "a"(op) |
| 213 | ); |
Alek Du | 1e0485e | 2010-03-12 16:28:15 +0800 | [diff] [blame] | 214 | } |
| 215 | |
| 216 | enum cpuid_regs { |
| 217 | CR_EAX = 0, |
| 218 | CR_ECX, |
| 219 | CR_EDX, |
| 220 | CR_EBX |
| 221 | }; |
| 222 | |
Eric Ernst | aecaba3 | 2013-04-02 12:02:59 -0700 | [diff] [blame] | 223 | int mid_identify_cpu(void) |
Alek Du | 1e0485e | 2010-03-12 16:28:15 +0800 | [diff] [blame] | 224 | { |
| 225 | u32 regs[4]; |
| 226 | |
Jeremy Compostella | 3661270 | 2014-08-14 13:17:40 +0200 | [diff] [blame] | 227 | cpuid(1, regs); |
Bin Gao | 8a13ab7 | 2013-03-30 00:11:07 -0700 | [diff] [blame] | 228 | |
Eric Ernst | aecaba3 | 2013-04-02 12:02:59 -0700 | [diff] [blame] | 229 | switch ( regs[CR_EAX] & CPUID_MASK ) { |
| 230 | |
| 231 | case PENWELL_FAMILY: |
| 232 | return MID_CPU_CHIP_PENWELL; |
| 233 | case CLOVERVIEW_FAMILY: |
| 234 | return MID_CPU_CHIP_CLOVERVIEW; |
| 235 | case VALLEYVIEW2_FAMILY: |
| 236 | return MID_CPU_CHIP_VALLEYVIEW2; |
Mark F. Brown | 90847a8 | 2011-09-07 18:06:24 -0400 | [diff] [blame] | 237 | case TANGIER_FAMILY: |
| 238 | return MID_CPU_CHIP_TANGIER; |
| 239 | case ANNIEDALE_FAMILY: |
| 240 | return MID_CPU_CHIP_ANNIEDALE; |
Eric Ernst | aecaba3 | 2013-04-02 12:02:59 -0700 | [diff] [blame] | 241 | default: |
| 242 | return MID_CPU_CHIP_OTHER; |
| 243 | } |
Alek Du | 1e0485e | 2010-03-12 16:28:15 +0800 | [diff] [blame] | 244 | } |
| 245 | |
| 246 | static void setup_spi(void) |
| 247 | { |
Leonard Mai | 4c56e45 | 2011-10-06 12:27:46 -0700 | [diff] [blame] | 248 | if (!(*(int *)SPI_TYPE)) { |
Eric Ernst | aecaba3 | 2013-04-02 12:02:59 -0700 | [diff] [blame] | 249 | switch ( mid_identify_cpu() ) { |
| 250 | |
| 251 | case MID_CPU_CHIP_PENWELL: |
| 252 | *(int *)SPI_TYPE = SPI_1; |
| 253 | bs_printk("PNW detected\n"); |
| 254 | break; |
| 255 | |
| 256 | case MID_CPU_CHIP_CLOVERVIEW: |
| 257 | *(int *)SPI_TYPE = SPI_1; |
| 258 | bs_printk("CLV detected\n"); |
| 259 | break; |
| 260 | |
Mark F. Brown | 90847a8 | 2011-09-07 18:06:24 -0400 | [diff] [blame] | 261 | case MID_CPU_CHIP_TANGIER: |
| 262 | *(int *)SPI_TYPE = SPI_2; |
| 263 | bs_printk("MRD detected\n"); |
| 264 | break; |
| 265 | |
| 266 | case MID_CPU_CHIP_ANNIEDALE: |
| 267 | *(int *)SPI_TYPE = SPI_2; |
| 268 | bs_printk("ANN detected\n"); |
| 269 | break; |
| 270 | |
Eric Ernst | aecaba3 | 2013-04-02 12:02:59 -0700 | [diff] [blame] | 271 | case MID_CPU_CHIP_VALLEYVIEW2: |
| 272 | case MID_CPU_CHIP_OTHER: |
| 273 | default: |
| 274 | no_uart_used = 1; |
Alek Du | 1e0485e | 2010-03-12 16:28:15 +0800 | [diff] [blame] | 275 | } |
Leonard Mai | 4c56e45 | 2011-10-06 12:27:46 -0700 | [diff] [blame] | 276 | } |
Alek Du | 1e0485e | 2010-03-12 16:28:15 +0800 | [diff] [blame] | 277 | } |
| 278 | |
Evgeny Kalugin | 8e8bf00 | 2013-10-24 11:21:07 +0300 | [diff] [blame] | 279 | static void setup_gdt(void) |
| 280 | { |
| 281 | static const u64 boot_gdt[] __attribute__((aligned(16))) = { |
| 282 | /* CS: code, read/execute, 4 GB, base 0 */ |
| 283 | [GDT_ENTRY_BOOT_CS] = GDT_ENTRY(0xc09b, 0, 0xfffff), |
| 284 | /* DS: data, read/write, 4 GB, base 0 */ |
| 285 | [GDT_ENTRY_BOOT_DS] = GDT_ENTRY(0xc093, 0, 0xfffff), |
| 286 | }; |
| 287 | static struct gdt_ptr gdt; |
| 288 | |
| 289 | gdt.len = sizeof(boot_gdt)-1; |
| 290 | gdt.ptr = (u32)&boot_gdt; |
| 291 | |
| 292 | asm volatile("lgdtl %0" : : "m" (gdt)); |
| 293 | } |
| 294 | |
| 295 | static void setup_idt(void) |
| 296 | { |
| 297 | static const struct gdt_ptr null_idt = {0, 0}; |
| 298 | asm volatile("lidtl %0" : : "m" (null_idt)); |
| 299 | } |
| 300 | |
| 301 | static void vxe_fw_setup(void) |
| 302 | { |
| 303 | u8 *vxe_fw_image; |
| 304 | u32 vxe_fw_size; |
| 305 | u32 vxe_fw_load_adrs; |
| 306 | |
| 307 | vxe_fw_size = *(u32*)VXE_FW_SIZE_OFFSET; |
| 308 | /* do we have a VXE FW image? */ |
| 309 | if (vxe_fw_size == 0) |
| 310 | return; |
| 311 | |
| 312 | /* Do we have enough room to load the image? */ |
| 313 | if (vxe_fw_size > imr6_toc.entries[IMR_TOC_ENTRY_VXE_FW].size) { |
| 314 | bs_printk("FATAL ERROR: VXE FW image size is too large for IMR\n"); |
| 315 | FATAL_HANG(); |
| 316 | } |
| 317 | |
| 318 | vxe_fw_image = (u8 *)( |
| 319 | BZIMAGE_OFFSET |
| 320 | + *(u32 *)BZIMAGE_SIZE_OFFSET |
| 321 | + *(u32 *)INITRD_SIZE_OFFSET |
| 322 | ); |
| 323 | |
| 324 | vxe_fw_load_adrs = IMR6_START_ADDRESS + imr6_toc.entries[IMR_TOC_ENTRY_VXE_FW].start_offset; |
| 325 | memcpy((u8 *)vxe_fw_load_adrs, vxe_fw_image, vxe_fw_size); |
| 326 | } |
| 327 | |
| 328 | static void load_imr_toc(u32 imr, u32 imrsize, imr_toc_t *toc, u32 tocsize) |
| 329 | { |
| 330 | if (imr == 0 || imrsize == 0 || toc == NULL || tocsize == 0 || imrsize < tocsize ) |
| 331 | { |
| 332 | bs_printk("FATAL ERROR: TOC size is too large for IMR\n"); |
| 333 | FATAL_HANG(); |
| 334 | } |
| 335 | memcpy((u8 *)imr, (u8 *)toc, tocsize); |
| 336 | } |
| 337 | |
| 338 | |
| 339 | static u32 xen_multiboot_setup(void) |
| 340 | { |
| 341 | u32 *magic, *xen_image, i; |
| 342 | char *src, *dst; |
| 343 | u32 xen_size; |
| 344 | u32 xen_jump_adrs; |
| 345 | static module_t modules[3]; |
| 346 | static multiboot_info_t mb = { |
| 347 | .flags = MBI_CMDLINE | MBI_MODULES | MBI_MEMMAP | MBI_DRIVES, |
| 348 | .mmap_addr = (u32)mb_mmap, |
| 349 | .mods_count = 3, |
| 350 | .mods_addr = (u32)modules, |
| 351 | }; |
| 352 | |
| 353 | xen_size = *(u32 *)XEN_SIZE_OFFSET; |
| 354 | /* do we have a xen image? */ |
| 355 | if (xen_size == 0) { |
| 356 | return 0; |
| 357 | } |
| 358 | |
| 359 | /* Compute the actual offset of the Xen image */ |
| 360 | xen_image = (u32*)( |
| 361 | BZIMAGE_OFFSET |
| 362 | + *(u32 *)BZIMAGE_SIZE_OFFSET |
| 363 | + *(u32 *)INITRD_SIZE_OFFSET |
| 364 | + *(u32 *)VXE_FW_SIZE_OFFSET |
| 365 | + *(u32 *)SEC_PLAT_SVCS_SIZE_OFFSET |
| 366 | ); |
| 367 | |
| 368 | /* the multiboot signature should be located in the first 8192 bytes */ |
| 369 | for (magic = xen_image; magic < xen_image + 2048; magic++) |
| 370 | if (*magic == MULTIBOOT_HEADER_MAGIC) |
| 371 | break; |
| 372 | if (*magic != MULTIBOOT_HEADER_MAGIC) { |
| 373 | return 0; |
| 374 | } |
| 375 | |
| 376 | mb.cmdline = (u32)strnchr((char *)CMDLINE_OFFSET, '$', CMDLINE_SIZE) + 1; |
Jeremy Compostella | 3661270 | 2014-08-14 13:17:40 +0200 | [diff] [blame] | 377 | dst = (char *)mb.cmdline + strnlen((const char *)mb.cmdline, CMDLINE_SIZE) - 1; |
Evgeny Kalugin | 8e8bf00 | 2013-10-24 11:21:07 +0300 | [diff] [blame] | 378 | *dst = ' '; |
| 379 | dst++; |
Jeremy Compostella | 3661270 | 2014-08-14 13:17:40 +0200 | [diff] [blame] | 380 | src = (char *)CMDLINE_OFFSET; |
Evgeny Kalugin | 8e8bf00 | 2013-10-24 11:21:07 +0300 | [diff] [blame] | 381 | for (i = 0 ;i < strnlen((const char *)CMDLINE_OFFSET, CMDLINE_SIZE);i++) { |
| 382 | if (!strncmp(src, "capfreq=", 8)) { |
| 383 | while (*src != ' ' && *src != 0) { |
| 384 | *dst = *src; |
| 385 | dst++; |
| 386 | src++; |
| 387 | } |
| 388 | break; |
| 389 | } |
| 390 | src++; |
| 391 | } |
| 392 | |
| 393 | /* fill in the multiboot module information: dom0 kernel + initrd + Platform Services Image */ |
| 394 | modules[0].mod_start = BZIMAGE_OFFSET; |
| 395 | modules[0].mod_end = BZIMAGE_OFFSET + *(u32 *)BZIMAGE_SIZE_OFFSET; |
| 396 | modules[0].string = CMDLINE_OFFSET; |
| 397 | |
| 398 | modules[1].mod_start = modules[0].mod_end ; |
| 399 | modules[1].mod_end = modules[1].mod_start + *(u32 *)INITRD_SIZE_OFFSET; |
| 400 | modules[1].string = 0; |
| 401 | |
| 402 | modules[2].mod_start = sps_load_adrs; |
| 403 | modules[2].mod_end = modules[2].mod_start + *(u32 *)SEC_PLAT_SVCS_SIZE_OFFSET; |
| 404 | modules[2].string = 0; |
| 405 | |
| 406 | mb.drives_addr = IMR6_START_ADDRESS + imr6_toc.entries[IMR_TOC_ENTRY_XEN_EXTRA].start_offset; |
| 407 | mb.drives_length = imr6_toc.entries[IMR_TOC_ENTRY_XEN_EXTRA].size; |
| 408 | |
| 409 | for(i = 0; i < E820MAX; i++) |
| 410 | if (!mb_mmap[i].size) |
| 411 | break; |
| 412 | mb.mmap_length = i * sizeof(memory_map_t); |
| 413 | |
| 414 | /* relocate xen to start address */ |
| 415 | if (xen_size > imr7_size) { |
| 416 | bs_printk("FATAL ERROR: Xen image size is too large for IMR\n"); |
| 417 | FATAL_HANG(); |
| 418 | } |
| 419 | xen_jump_adrs = IMR7_START_ADDRESS; |
| 420 | memcpy((u8 *)xen_jump_adrs, xen_image, xen_size); |
| 421 | |
| 422 | mb_info = (u32)&mb; |
| 423 | mb_magic = MULTIBOOT_BOOTLOADER_MAGIC; |
| 424 | |
| 425 | return (u32)xen_jump_adrs; |
| 426 | } |
| 427 | |
| 428 | static void sec_plat_svcs_setup(void) |
| 429 | { |
| 430 | u8 *sps_image; |
| 431 | u32 sps_size; |
| 432 | |
| 433 | sps_size = PAGE_ALIGN_FWD(*(u32*)SEC_PLAT_SVCS_SIZE_OFFSET); |
| 434 | /* do we have a SPS image? */ |
| 435 | if (sps_size == 0) |
| 436 | return; |
| 437 | |
| 438 | /* Do we have enough room to load the image? */ |
| 439 | if (sps_size > imr7_size) { |
| 440 | bs_printk("FATAL ERROR: SPS image size is too large for IMR\n"); |
| 441 | FATAL_HANG(); |
| 442 | } |
| 443 | |
| 444 | sps_image = (u8 *)( |
| 445 | BZIMAGE_OFFSET |
| 446 | + *(u32 *)BZIMAGE_SIZE_OFFSET |
| 447 | + *(u32 *)INITRD_SIZE_OFFSET |
| 448 | + *(u32 *)VXE_FW_SIZE_OFFSET |
| 449 | ); |
| 450 | |
| 451 | /* load SPS image (with assumed CHAABI Mailboxes suffixed) */ |
| 452 | /* at bottom of IMR7 */ |
| 453 | /* Must be page-aligned or Xen will panic */ |
| 454 | sps_load_adrs = PAGE_ALIGN_BACK(IMR7_START_ADDRESS + imr7_size - sps_size); |
| 455 | memcpy((u8 *)sps_load_adrs, sps_image, sps_size); |
| 456 | |
| 457 | /* reduce remaining size for Xen image size check */ |
| 458 | imr7_size -= sps_size; |
| 459 | } |
| 460 | |
Alek Du | 6135ebb | 2008-05-20 14:07:07 +0800 | [diff] [blame] | 461 | int bootstub(void) |
Alek Du | b7f7baf | 2008-05-13 16:23:15 +0800 | [diff] [blame] | 462 | { |
Evgeny Kalugin | 8e8bf00 | 2013-10-24 11:21:07 +0300 | [diff] [blame] | 463 | u32 jmp; |
Florent Auger | b5c97f5 | 2014-07-09 12:54:50 +0200 | [diff] [blame] | 464 | struct boot_img_hdr *aosp = (struct boot_img_hdr *)AOSP_HEADER_ADDRESS; |
Evgeny Kalugin | 8e8bf00 | 2013-10-24 11:21:07 +0300 | [diff] [blame] | 465 | struct boot_params *bp = (struct boot_params *)BOOT_PARAMS_OFFSET; |
Florent Auger | b5c97f5 | 2014-07-09 12:54:50 +0200 | [diff] [blame] | 466 | struct setup_header *sh; |
Evgeny Kalugin | 8e8bf00 | 2013-10-24 11:21:07 +0300 | [diff] [blame] | 467 | u32 imr_size; |
| 468 | int nr_entries; |
| 469 | |
Florent Auger | b5c97f5 | 2014-07-09 12:54:50 +0200 | [diff] [blame] | 470 | if (is_image_aosp(aosp->magic)) { |
| 471 | sh = (struct setup_header *)((unsigned int)aosp->kernel_addr + 0x1F1); |
| 472 | /* disable the bs_printk through SPI/UART */ |
| 473 | *(int *)SPI_UART_SUPPRESSION = 1; |
| 474 | *(int *)SPI_TYPE = SPI_2; |
| 475 | } else |
| 476 | sh = (struct setup_header *)SETUP_HEADER_OFFSET; |
| 477 | |
| 478 | setup_idt(); |
Evgeny Kalugin | 8e8bf00 | 2013-10-24 11:21:07 +0300 | [diff] [blame] | 479 | setup_gdt(); |
Alek Du | 1e0485e | 2010-03-12 16:28:15 +0800 | [diff] [blame] | 480 | setup_spi(); |
Florent Auger | b5c97f5 | 2014-07-09 12:54:50 +0200 | [diff] [blame] | 481 | bs_printk("Bootstub Version: 1.4 ...\n"); |
Evgeny Kalugin | 8e8bf00 | 2013-10-24 11:21:07 +0300 | [diff] [blame] | 482 | |
| 483 | memset(bp, 0, sizeof (struct boot_params)); |
| 484 | |
| 485 | if (mid_identify_cpu() == MID_CPU_CHIP_VALLEYVIEW2) { |
| 486 | nr_entries = get_e820_by_bios(bp->e820_map); |
| 487 | bp->e820_entries = (nr_entries > 0) ? nr_entries : 0; |
| 488 | } else { |
| 489 | sfi_setup_mmap(bp, mb_mmap); |
| 490 | } |
| 491 | |
Evgeny Kalugin | 9b26e97 | 2014-01-03 00:16:48 +0200 | [diff] [blame] | 492 | if ((mid_identify_cpu() != MID_CPU_CHIP_TANGIER) && (mid_identify_cpu() != MID_CPU_CHIP_ANNIEDALE)) { |
Evgeny Kalugin | 8e8bf00 | 2013-10-24 11:21:07 +0300 | [diff] [blame] | 493 | if ((IMR6_END_ADDRESS > IMR6_START_ADDRESS) && (IMR7_END_ADDRESS > IMR7_START_ADDRESS)) { |
| 494 | imr_size = PAGE_ALIGN_FWD(IMR6_END_ADDRESS - IMR6_START_ADDRESS); |
| 495 | load_imr_toc(IMR6_START_ADDRESS, imr_size, &imr6_toc, sizeof(imr6_toc)); |
| 496 | vxe_fw_setup(); |
| 497 | sfi_add_e820_entry(bp, mb_mmap, IMR6_START_ADDRESS, imr_size, E820_RESERVED); |
| 498 | |
| 499 | imr7_size = PAGE_ALIGN_FWD(IMR7_END_ADDRESS - IMR7_START_ADDRESS); |
| 500 | sec_plat_svcs_setup(); |
| 501 | sfi_add_e820_entry(bp, mb_mmap, IMR7_START_ADDRESS, imr7_size, E820_RESERVED); |
| 502 | } else { |
| 503 | *(u32 *)XEN_SIZE_OFFSET = 0; /* Don't allow Xen to boot */ |
| 504 | } |
| 505 | } else { |
| 506 | *(u32 *)XEN_SIZE_OFFSET = 0; /* Don't allow Xen to boot */ |
| 507 | } |
| 508 | |
| 509 | setup_boot_params(bp, sh); |
| 510 | |
| 511 | jmp = xen_multiboot_setup(); |
| 512 | if (!jmp) { |
| 513 | bs_printk("Using bzImage to boot\n"); |
| 514 | jmp = bzImage_setup(bp, sh); |
| 515 | } else |
| 516 | bs_printk("Using multiboot image to boot\n"); |
| 517 | |
| 518 | bs_printk("Jump to kernel 32bit entry\n"); |
| 519 | return jmp; |
Alek Du | b7f7baf | 2008-05-13 16:23:15 +0800 | [diff] [blame] | 520 | } |
Mark F. Brown | 90847a8 | 2011-09-07 18:06:24 -0400 | [diff] [blame] | 521 | |
| 522 | void bs_printk(const char *str) |
| 523 | { |
Evgeny Kalugin | 8e8bf00 | 2013-10-24 11:21:07 +0300 | [diff] [blame] | 524 | if (*(int *)SPI_UART_SUPPRESSION) |
| 525 | return; |
Mark F. Brown | 90847a8 | 2011-09-07 18:06:24 -0400 | [diff] [blame] | 526 | |
Evgeny Kalugin | 8e8bf00 | 2013-10-24 11:21:07 +0300 | [diff] [blame] | 527 | switch (*(int *)SPI_TYPE) { |
Mark F. Brown | 90847a8 | 2011-09-07 18:06:24 -0400 | [diff] [blame] | 528 | |
Evgeny Kalugin | 8e8bf00 | 2013-10-24 11:21:07 +0300 | [diff] [blame] | 529 | case SPI_1: |
Mark F. Brown | 90847a8 | 2011-09-07 18:06:24 -0400 | [diff] [blame] | 530 | bs_spi_printk(str); |
| 531 | break; |
| 532 | |
| 533 | case SPI_2: |
| 534 | bs_ssp_printk(str); |
| 535 | break; |
Evgeny Kalugin | 8e8bf00 | 2013-10-24 11:21:07 +0300 | [diff] [blame] | 536 | } |
Mark F. Brown | 90847a8 | 2011-09-07 18:06:24 -0400 | [diff] [blame] | 537 | } |