29 30#include <stand.h> 31#include "api_public.h" 32#include "glue.h" 33 34#define DEBUG 35#undef DEBUG 36 37#ifdef DEBUG 38#define debugf(fmt, args...) do { printf("%s(): ", __func__); printf(fmt,##args); } while (0) 39#else 40#define debugf(fmt, args...) 41#endif 42 43/* Some random address used by U-Boot. */ 44extern long uboot_address; 45 46/* crc32 stuff stolen from lib/libdisk/write_ia64_disk.c */ 47static uint32_t crc32_tab[] = { 48 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, 49 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 50 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2, 51 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 52 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, 53 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, 54 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c, 55 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 56 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 57 0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 58 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106, 59 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, 60 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 61 0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 62 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, 63 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, 64 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, 65 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 66 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 67 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, 68 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, 69 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, 70 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84, 71 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 72 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 73 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, 74 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e, 75 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 76 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 77 0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 78 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28, 79 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, 80 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f, 81 0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 82 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, 83 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, 84 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, 85 0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 86 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 87 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, 88 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, 89 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 90 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d 91}; 92 93static uint32_t 94crc32(const void *buf, size_t size) 95{ 96 const uint8_t *p; 97 uint32_t crc; 98 99 p = buf; 100 crc = ~0U; 101 102 while (size--) 103 crc = crc32_tab[(crc ^ *p++) & 0xFF] ^ (crc >> 8); 104 105 return (crc ^ ~0U); 106} 107 108 109static int 110valid_sig(struct api_signature *sig) 111{ 112 uint32_t checksum; 113 struct api_signature s; 114 115 if (sig == NULL) 116 return (0); 117 /* 118 * Clear the checksum field (in the local copy) so as to calculate the 119 * CRC with the same initial contents as at the time when the sig was 120 * produced 121 */ 122 s = *sig; 123 s.checksum = 0; 124 125 checksum = crc32((void *)&s, sizeof(struct api_signature)); 126 127 if (checksum != sig->checksum) 128 return (0); 129 130 return (1); 131} 132 133/* 134 * Searches for the U-Boot API signature 135 * 136 * returns 1/0 depending on found/not found result 137 */ 138int 139api_search_sig(struct api_signature **sig) 140{ 141 unsigned char *sp, *spend; 142 143 if (sig == NULL) 144 return (0); 145 146 if (uboot_address == 0) 147 uboot_address = 255 * 1024 * 1024; 148 149 sp = (void *)(uboot_address & ~0x000fffff); 150 spend = sp + 0x00100000 - API_SIG_MAGLEN; 151 while (sp < spend) { 152 if (!bcmp(sp, API_SIG_MAGIC, API_SIG_MAGLEN)) { 153 *sig = (struct api_signature *)sp; 154 if (valid_sig(*sig)) 155 return (1); 156 } 157 sp += API_SIG_MAGLEN; 158 } 159 160 *sig = NULL; 161 return (0); 162} 163 164/**************************************** 165 * 166 * console 167 * 168 ****************************************/ 169 170int 171ub_getc(void) 172{ 173 int c; 174 175 if (!syscall(API_GETC, NULL, (uint32_t)&c)) 176 return (-1); 177 178 return (c); 179} 180 181int 182ub_tstc(void) 183{ 184 int t; 185 186 if (!syscall(API_TSTC, NULL, (uint32_t)&t)) 187 return (-1); 188 189 return (t); 190} 191 192void 193ub_putc(char c) 194{ 195 196 syscall(API_PUTC, NULL, (uint32_t)&c); 197} 198 199void 200ub_puts(const char *s) 201{ 202 203 syscall(API_PUTS, NULL, (uint32_t)s); 204} 205 206/**************************************** 207 * 208 * system 209 * 210 ****************************************/ 211 212void 213ub_reset(void) 214{ 215 216 syscall(API_RESET, NULL); 217} 218
| 29 30#include <stand.h> 31#include "api_public.h" 32#include "glue.h" 33 34#define DEBUG 35#undef DEBUG 36 37#ifdef DEBUG 38#define debugf(fmt, args...) do { printf("%s(): ", __func__); printf(fmt,##args); } while (0) 39#else 40#define debugf(fmt, args...) 41#endif 42 43/* Some random address used by U-Boot. */ 44extern long uboot_address; 45 46/* crc32 stuff stolen from lib/libdisk/write_ia64_disk.c */ 47static uint32_t crc32_tab[] = { 48 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, 49 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 50 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2, 51 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 52 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, 53 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, 54 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c, 55 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 56 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 57 0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 58 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106, 59 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, 60 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 61 0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 62 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, 63 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, 64 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, 65 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 66 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 67 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, 68 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, 69 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, 70 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84, 71 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 72 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 73 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, 74 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e, 75 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 76 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 77 0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 78 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28, 79 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, 80 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f, 81 0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 82 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, 83 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, 84 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, 85 0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 86 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 87 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, 88 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, 89 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 90 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d 91}; 92 93static uint32_t 94crc32(const void *buf, size_t size) 95{ 96 const uint8_t *p; 97 uint32_t crc; 98 99 p = buf; 100 crc = ~0U; 101 102 while (size--) 103 crc = crc32_tab[(crc ^ *p++) & 0xFF] ^ (crc >> 8); 104 105 return (crc ^ ~0U); 106} 107 108 109static int 110valid_sig(struct api_signature *sig) 111{ 112 uint32_t checksum; 113 struct api_signature s; 114 115 if (sig == NULL) 116 return (0); 117 /* 118 * Clear the checksum field (in the local copy) so as to calculate the 119 * CRC with the same initial contents as at the time when the sig was 120 * produced 121 */ 122 s = *sig; 123 s.checksum = 0; 124 125 checksum = crc32((void *)&s, sizeof(struct api_signature)); 126 127 if (checksum != sig->checksum) 128 return (0); 129 130 return (1); 131} 132 133/* 134 * Searches for the U-Boot API signature 135 * 136 * returns 1/0 depending on found/not found result 137 */ 138int 139api_search_sig(struct api_signature **sig) 140{ 141 unsigned char *sp, *spend; 142 143 if (sig == NULL) 144 return (0); 145 146 if (uboot_address == 0) 147 uboot_address = 255 * 1024 * 1024; 148 149 sp = (void *)(uboot_address & ~0x000fffff); 150 spend = sp + 0x00100000 - API_SIG_MAGLEN; 151 while (sp < spend) { 152 if (!bcmp(sp, API_SIG_MAGIC, API_SIG_MAGLEN)) { 153 *sig = (struct api_signature *)sp; 154 if (valid_sig(*sig)) 155 return (1); 156 } 157 sp += API_SIG_MAGLEN; 158 } 159 160 *sig = NULL; 161 return (0); 162} 163 164/**************************************** 165 * 166 * console 167 * 168 ****************************************/ 169 170int 171ub_getc(void) 172{ 173 int c; 174 175 if (!syscall(API_GETC, NULL, (uint32_t)&c)) 176 return (-1); 177 178 return (c); 179} 180 181int 182ub_tstc(void) 183{ 184 int t; 185 186 if (!syscall(API_TSTC, NULL, (uint32_t)&t)) 187 return (-1); 188 189 return (t); 190} 191 192void 193ub_putc(char c) 194{ 195 196 syscall(API_PUTC, NULL, (uint32_t)&c); 197} 198 199void 200ub_puts(const char *s) 201{ 202 203 syscall(API_PUTS, NULL, (uint32_t)s); 204} 205 206/**************************************** 207 * 208 * system 209 * 210 ****************************************/ 211 212void 213ub_reset(void) 214{ 215 216 syscall(API_RESET, NULL); 217} 218
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