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;
80 info.mode = xyzModem_ymodem;
81 ret = xyzModem_stream_open(&info, &err);
83 printf("spl: ymodem err - %s\n", xyzModem_error(err));
87 res = xyzModem_stream_read(buf, BUF_SIZE, &err);
91 if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
92 image_get_magic((struct image_header *)buf) == FDT_MAGIC) {
93 struct spl_load_info load;
94 struct ymodem_fit_info info;
98 load.priv = (void *)&info;
102 info.image_read = BUF_SIZE;
103 load.read = ymodem_read_fit;
104 ret = spl_load_simple_fit(spl_image, &load, 0, (void *)buf);
105 size = info.image_read;
107 while ((res = xyzModem_stream_read(buf, BUF_SIZE, &err)) > 0)
110 ret = spl_parse_image_header(spl_image,
111 (struct image_header *)buf);
114 addr = spl_image->load_addr;
115 memcpy((void *)addr, buf, res);
119 while ((res = xyzModem_stream_read(buf, BUF_SIZE, &err)) > 0) {
120 memcpy((void *)addr, buf, res);
127 xyzModem_stream_close(&err);
128 xyzModem_stream_terminate(false, &getcymodem);
130 printf("Loaded %d bytes\n", size);
133 SPL_LOAD_IMAGE_METHOD("UART", 0, BOOT_DEVICE_UART, spl_ymodem_load_image);