1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2000-2004
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
7 * Texas Instruments, <www.ti.com>
9 * Matt Porter <mporter@ti.com>
14 #include <asm/u-boot.h>
15 #include <linux/libfdt.h>
20 * Information required to load image using ymodem.
22 * @image_read: Now of bytes read from the image.
23 * @buf: pointer to the previous read block.
25 struct ymodem_fit_info {
30 static int getcymodem(void) {
36 static ulong ymodem_read_fit(struct spl_load_info *load, ulong offset,
37 ulong size, void *addr)
40 struct ymodem_fit_info *info = load->priv;
41 char *buf = info->buf;
43 while (info->image_read < offset) {
44 res = xyzModem_stream_read(buf, BUF_SIZE, &err);
47 info->image_read += res;
50 if (info->image_read > offset) {
51 res = info->image_read - offset;
52 memcpy(addr, &buf[BUF_SIZE - res], res);
56 while (info->image_read < offset + size) {
57 res = xyzModem_stream_read(buf, BUF_SIZE, &err);
61 memcpy(addr, buf, res);
62 info->image_read += res;
69 static int spl_ymodem_load_image(struct spl_image_info *spl_image,
70 struct spl_boot_device *bootdev)
76 connection_info_t info;
78 struct image_header *ih = NULL;
81 info.mode = xyzModem_ymodem;
82 ret = xyzModem_stream_open(&info, &err);
84 printf("spl: ymodem err - %s\n", xyzModem_error(err));
88 res = xyzModem_stream_read(buf, BUF_SIZE, &err);
92 if (IS_ENABLED(CONFIG_SPL_LOAD_FIT_FULL) &&
93 image_get_magic((struct image_header *)buf) == FDT_MAGIC) {
94 addr = CONFIG_SYS_LOAD_ADDR;
95 ih = (struct image_header *)addr;
97 memcpy((void *)addr, buf, res);
101 while ((res = xyzModem_stream_read(buf, BUF_SIZE, &err)) > 0) {
102 memcpy((void *)addr, buf, res);
107 ret = spl_parse_image_header(spl_image, ih);
110 } else if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
111 image_get_magic((struct image_header *)buf) == FDT_MAGIC) {
112 struct spl_load_info load;
113 struct ymodem_fit_info info;
115 debug("Found FIT\n");
117 load.priv = (void *)&info;
118 load.filename = NULL;
121 info.image_read = BUF_SIZE;
122 load.read = ymodem_read_fit;
123 ret = spl_load_simple_fit(spl_image, &load, 0, (void *)buf);
124 size = info.image_read;
126 while ((res = xyzModem_stream_read(buf, BUF_SIZE, &err)) > 0)
129 ih = (struct image_header *)buf;
130 ret = spl_parse_image_header(spl_image, ih);
133 #ifdef CONFIG_SPL_GZIP
134 if (ih->ih_comp == IH_COMP_GZIP)
135 addr = CONFIG_SYS_LOAD_ADDR;
138 addr = spl_image->load_addr;
139 memcpy((void *)addr, buf, res);
140 ih = (struct image_header *)addr;
144 while ((res = xyzModem_stream_read(buf, BUF_SIZE, &err)) > 0) {
145 memcpy((void *)addr, buf, res);
152 xyzModem_stream_close(&err);
153 xyzModem_stream_terminate(false, &getcymodem);
155 printf("Loaded %lu bytes\n", size);
157 #ifdef CONFIG_SPL_GZIP
158 if (!(IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
159 image_get_magic((struct image_header *)buf) == FDT_MAGIC) &&
160 (ih->ih_comp == IH_COMP_GZIP)) {
161 if (gunzip((void *)(spl_image->load_addr + sizeof(*ih)),
162 CONFIG_SYS_BOOTM_LEN,
163 (void *)(CONFIG_SYS_LOAD_ADDR + sizeof(*ih)),
165 puts("Uncompressing error\n");
173 SPL_LOAD_IMAGE_METHOD("UART", 0, BOOT_DEVICE_UART, spl_ymodem_load_image);