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spl: ymodem: Add support for loading gzip compressed uImage

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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>
This commit is contained in:
Marek Vasut 2019-01-07 21:23:22 +01:00 • committed by Tom Rini
parent 7d05d3a8e3
commit 92e5cb804a
1 changed files with 24 additions and 5 deletions
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29
common/spl/spl_ymodem.c
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@ -69,12 +69,13 @@ static ulong ymodem_read_fit(struct spl_load_info *load, ulong offset,
static int spl_ymodem_load_image(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev)
{
int size = 0;
ulong size = 0;
int err;
int res;
int ret;
connection_info_t info;
char buf[BUF_SIZE];
struct image_header *ih;
ulong addr = 0;
info.mode = xyzModem_ymodem;
@ -107,12 +108,18 @@ static int spl_ymodem_load_image(struct spl_image_info *spl_image,
while ((res = xyzModem_stream_read(buf, BUF_SIZE, &err)) > 0)
size += res;
} else {
ret = spl_parse_image_header(spl_image,
(struct image_header *)buf);
ih = (struct image_header *)buf;
ret = spl_parse_image_header(spl_image, ih);
if (ret)
return ret;
addr = spl_image->load_addr;
#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 image_header *)addr;
size += res;
addr += res;
@ -121,13 +128,25 @@ static int spl_ymodem_load_image(struct spl_image_info *spl_image,
size += res;
addr += res;
}
#ifdef CONFIG_SPL_GZIP
if (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
}
end_stream:
xyzModem_stream_close(&err);
xyzModem_stream_terminate(false, &getcymodem);
printf("Loaded %d bytes\n", size);
printf("Loaded %lu bytes\n", size);
return 0;
}
SPL_LOAD_IMAGE_METHOD("UART", 0, BOOT_DEVICE_UART, spl_ymodem_load_image);