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92e5cb804a
Add support for gunzip-ing gzip-compressed uImages in the SPL Ymodem code. Loading data over Ymodem can be gruelingly slow, gzip-ing the data can reduce that aggravating slowness at least slightly (depends on the data, u-boot.bin compresses to ~1/3 of it's original size on ARM64), hence add optional support for decompressing gzip-compressed uImages. Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Tom Rini <trini@konsulko.com>
153 lines
3.3 KiB
C
153 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2000-2004
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* (C) Copyright 2011
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* Texas Instruments, <www.ti.com>
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*
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* Matt Porter <mporter@ti.com>
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*/
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#include <common.h>
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#include <spl.h>
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#include <xyzModem.h>
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#include <asm/u-boot.h>
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#include <linux/libfdt.h>
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#define BUF_SIZE 1024
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/*
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* Information required to load image using ymodem.
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*
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* @image_read: Now of bytes read from the image.
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* @buf: pointer to the previous read block.
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*/
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struct ymodem_fit_info {
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int image_read;
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char *buf;
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};
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static int getcymodem(void) {
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if (tstc())
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return (getc());
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return -1;
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}
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static ulong ymodem_read_fit(struct spl_load_info *load, ulong offset,
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ulong size, void *addr)
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{
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int res, err;
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struct ymodem_fit_info *info = load->priv;
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char *buf = info->buf;
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while (info->image_read < offset) {
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res = xyzModem_stream_read(buf, BUF_SIZE, &err);
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if (res <= 0)
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return res;
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info->image_read += res;
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}
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if (info->image_read > offset) {
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res = info->image_read - offset;
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memcpy(addr, &buf[BUF_SIZE - res], res);
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addr = addr + res;
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}
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while (info->image_read < offset + size) {
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res = xyzModem_stream_read(buf, BUF_SIZE, &err);
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if (res <= 0)
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return res;
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memcpy(addr, buf, res);
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info->image_read += res;
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addr += res;
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}
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return size;
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}
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static int spl_ymodem_load_image(struct spl_image_info *spl_image,
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struct spl_boot_device *bootdev)
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{
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ulong size = 0;
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int err;
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int res;
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int ret;
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connection_info_t info;
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char buf[BUF_SIZE];
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struct image_header *ih;
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ulong addr = 0;
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info.mode = xyzModem_ymodem;
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ret = xyzModem_stream_open(&info, &err);
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if (ret) {
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printf("spl: ymodem err - %s\n", xyzModem_error(err));
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return ret;
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}
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res = xyzModem_stream_read(buf, BUF_SIZE, &err);
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if (res <= 0)
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goto end_stream;
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if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
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image_get_magic((struct image_header *)buf) == FDT_MAGIC) {
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struct spl_load_info load;
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struct ymodem_fit_info info;
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debug("Found FIT\n");
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load.dev = NULL;
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load.priv = (void *)&info;
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load.filename = NULL;
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load.bl_len = 1;
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info.buf = buf;
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info.image_read = BUF_SIZE;
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load.read = ymodem_read_fit;
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ret = spl_load_simple_fit(spl_image, &load, 0, (void *)buf);
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size = info.image_read;
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while ((res = xyzModem_stream_read(buf, BUF_SIZE, &err)) > 0)
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size += res;
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} else {
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ih = (struct image_header *)buf;
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ret = spl_parse_image_header(spl_image, ih);
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if (ret)
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return ret;
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#ifdef CONFIG_SPL_GZIP
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if (ih->ih_comp == IH_COMP_GZIP)
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addr = CONFIG_SYS_LOAD_ADDR;
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else
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#endif
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addr = spl_image->load_addr;
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memcpy((void *)addr, buf, res);
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ih = (struct image_header *)addr;
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size += res;
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addr += res;
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while ((res = xyzModem_stream_read(buf, BUF_SIZE, &err)) > 0) {
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memcpy((void *)addr, buf, res);
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size += res;
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addr += res;
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}
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#ifdef CONFIG_SPL_GZIP
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if (ih->ih_comp == IH_COMP_GZIP) {
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if (gunzip((void *)(spl_image->load_addr + sizeof(*ih)),
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CONFIG_SYS_BOOTM_LEN,
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(void *)(CONFIG_SYS_LOAD_ADDR + sizeof(*ih)),
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&size)) {
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puts("Uncompressing error\n");
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return -EIO;
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}
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}
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#endif
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}
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end_stream:
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xyzModem_stream_close(&err);
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xyzModem_stream_terminate(false, &getcymodem);
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printf("Loaded %lu bytes\n", size);
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return 0;
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}
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SPL_LOAD_IMAGE_METHOD("UART", 0, BOOT_DEVICE_UART, spl_ymodem_load_image);
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