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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 | // SPDX-License-Identifier: GPL-2.0+ /* * (C) Copyright 2000-2004 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * (C) Copyright 2011 * Texas Instruments, <www.ti.com> * * Matt Porter <mporter@ti.com> */ #include <gzip.h> #include <image.h> #include <log.h> #include <spl.h> #include <xyzModem.h> #include <linux/libfdt.h> #define BUF_SIZE 1024 /* * Information required to load image using ymodem. * * @image_read: Now of bytes read from the image. * @buf: pointer to the previous read block. */ struct ymodem_fit_info { int image_read; char *buf; }; static int getcymodem(void) { if (tstc()) return (getchar()); return -1; } static ulong ymodem_read_fit(struct spl_load_info *load, ulong offset, ulong size, void *addr) { int res, err, buf_offset; struct ymodem_fit_info *info = load->priv; char *buf = info->buf; ulong copy_size = size; while (info->image_read < offset) { res = xyzModem_stream_read(buf, BUF_SIZE, &err); if (res <= 0) break; info->image_read += res; } if (info->image_read > offset) { res = info->image_read - offset; if (info->image_read % BUF_SIZE) buf_offset = (info->image_read % BUF_SIZE); else buf_offset = BUF_SIZE; if (res > copy_size) { memcpy(addr, &buf[buf_offset - res], copy_size); goto done; } memcpy(addr, &buf[buf_offset - res], res); addr = addr + res; copy_size -= res; } while (info->image_read < offset + size) { res = xyzModem_stream_read(buf, BUF_SIZE, &err); if (res <= 0) break; info->image_read += res; if (res > copy_size) { memcpy(addr, buf, copy_size); goto done; } memcpy(addr, buf, res); addr += res; copy_size -= res; } done: return size; } int spl_ymodem_load_image(struct spl_image_info *spl_image, struct spl_boot_device *bootdev) { ulong size = 0; int err; int res; int ret; connection_info_t info; char buf[BUF_SIZE]; struct legacy_img_hdr *ih = NULL; ulong addr = 0; info.mode = xyzModem_ymodem; ret = xyzModem_stream_open(&info, &err); if (ret) { printf("spl: ymodem err - %s\n", xyzModem_error(err)); return ret; } res = xyzModem_stream_read(buf, BUF_SIZE, &err); if (res <= 0) goto end_stream; if (IS_ENABLED(CONFIG_SPL_LOAD_FIT_FULL) && image_get_magic((struct legacy_img_hdr *)buf) == FDT_MAGIC) { addr = CONFIG_SYS_LOAD_ADDR; ih = (struct legacy_img_hdr *)addr; memcpy((void *)addr, buf, res); size += res; addr += res; while ((res = xyzModem_stream_read(buf, BUF_SIZE, &err)) > 0) { memcpy((void *)addr, buf, res); size += res; addr += res; } ret = spl_parse_image_header(spl_image, bootdev, ih); if (ret) return ret; } else if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) && image_get_magic((struct legacy_img_hdr *)buf) == FDT_MAGIC) { struct spl_load_info load; struct ymodem_fit_info info; debug("Found FIT\n"); spl_load_init(&load, ymodem_read_fit, (void *)&info, 1); info.buf = buf; info.image_read = BUF_SIZE; ret = spl_load_simple_fit(spl_image, &load, 0, (void *)buf); size = info.image_read; while ((res = xyzModem_stream_read(buf, BUF_SIZE, &err)) > 0) size += res; } else { ih = (struct legacy_img_hdr *)buf; ret = spl_parse_image_header(spl_image, bootdev, ih); if (ret) goto end_stream; #ifdef CONFIG_SPL_GZIP if (ih->ih_comp == IH_COMP_GZIP) addr = CONFIG_SYS_LOAD_ADDR; else #endif addr = spl_image->load_addr; memcpy((void *)addr, buf, res); ih = (struct legacy_img_hdr *)addr; size += res; addr += res; while ((res = xyzModem_stream_read(buf, BUF_SIZE, &err)) > 0) { memcpy((void *)addr, buf, res); size += res; addr += res; } } end_stream: xyzModem_stream_close(&err); xyzModem_stream_terminate(false, &getcymodem); printf("Loaded %lu bytes\n", size); #ifdef CONFIG_SPL_GZIP if (!(IS_ENABLED(CONFIG_SPL_LOAD_FIT) && image_get_magic((struct legacy_img_hdr *)buf) == FDT_MAGIC) && (ih->ih_comp == IH_COMP_GZIP)) { if (gunzip((void *)(spl_image->load_addr + sizeof(*ih)), CONFIG_SYS_BOOTM_LEN, (void *)(CONFIG_SYS_LOAD_ADDR + sizeof(*ih)), &size)) { puts("Uncompressing error\n"); return -EIO; } } #endif return ret; } SPL_LOAD_IMAGE_METHOD("UART", 0, BOOT_DEVICE_UART, spl_ymodem_load_image); |