[U-Boot-Users] [PATCH] add: fpga loadi <dev> <src> sub command.
Grant Likely
grant.likely at secretlab.ca
Tue Jul 3 19:50:51 CEST 2007
On 7/3/07, eran.liberty at gmail.com <eran.liberty at gmail.com> wrote:
> Adds the capability to load an image packaged with mkimage either in compressed form or not.
> (raw gzip & bzip2 images packed with mkimage)
>
> fpga loadi <device number> <address of image>
I might be missing something here; wouldn't it be better to extend the
loadmk command? It looks to me that loadmk currently only handles
uncompressed images, but that it could be fixed to do compressed ones
too. Correct me if I'm wrong.
>
> Signed-off-by: Eran Liberty <eran.liberty at gmail.com>
>
> Index: common/cmd_fpga.c
> ===================================================================
> --- common/cmd_fpga.c (.../tags/trunk/20070620_2_merge_to_exsw6000) (revision 69)
> +++ common/cmd_fpga.c (.../branches/exsw6000) (revision 69)
> @@ -32,6 +32,7 @@
> #endif
> #include <fpga.h>
> #include <malloc.h>
> +#include <bzlib.h>
>
> #if 0
> #define FPGA_DEBUG
> @@ -45,6 +46,9 @@
>
> #if defined (CONFIG_FPGA) && ( CONFIG_COMMANDS & CFG_CMD_FPGA )
>
> +extern int gunzip (void *dst, int dstlen, unsigned char *src,
> + unsigned long *lenp);
> +
Very bad; please don't do this (even if it is done elsewhere). Please
fix/create the appropriate gzip header file instead.
> /* Local functions */
> static void fpga_usage (cmd_tbl_t * cmdtp);
> static int fpga_get_op (char *opstr);
> @@ -56,7 +60,92 @@
> #define FPGA_LOADB 2
> #define FPGA_DUMP 3
> #define FPGA_LOADMK 4
> +#define FPGA_LOADI 5
>
> +/* Load an image */
> +int fpga_loadi (int devnum, void *buf)
> +{
> + ulong addr = (ulong) (buf);
> + ulong data, len, checksum;
> + image_header_t hdr;
> + unsigned int unc_len;
> + unsigned int *punc_len = &unc_len;
> + int i;
> +
> + /* Copy header so we can blank CRC field for re-calculation */
> +#ifdef CONFIG_HAS_DATAFLASH
> + if (addr_dataflash (addr)) {
> + read_dataflash (addr, sizeof (image_header_t), (char *)&hdr);
> + } else
> +#endif
The Dataflash-as-memory concept is depreciated. You shouldn't add the
dataflash hooks to new code.
> + memmove (&hdr, (char *)addr, sizeof (image_header_t));
> + if (ntohl (hdr.ih_magic) != IH_MAGIC) {
> + puts ("Bad Magic Number\n");
> + return 1;
> + }
> + data = (ulong) & hdr;
> + len = sizeof (image_header_t);
> +
> + checksum = ntohl (hdr.ih_hcrc);
> + hdr.ih_hcrc = 0;
> +
> + if (crc32 (0, (uchar *) data, len) != checksum) {
> + puts ("Bad Header Checksum\n");
> + return 1;
> + }
> +#ifdef CONFIG_HAS_DATAFLASH
> + if (addr_dataflash (addr)) {
> + len = ntohl (hdr.ih_size) + sizeof (image_header_t);
> + read_dataflash (addr, len, (char *)CFG_LOAD_ADDR);
> + addr = CFG_LOAD_ADDR;
> + }
> +#endif
Ditto
> +
> + print_image_hdr ((image_header_t *) addr);
> +
> + data = addr + sizeof (image_header_t);
> + len = ntohl (hdr.ih_size);
> +
> + puts (" Verifying Checksum ... ");
> + if (crc32 (0, (uchar *) data, len) != ntohl (hdr.ih_dcrc)) {
> + printf ("Bad Data CRC\n");
> + return 1;
> + }
> + puts ("OK\n");
> +
> + switch (hdr.ih_comp) {
> + case IH_COMP_NONE:
> + memmove ((char *)CFG_LOAD_ADDR, (void *)data, len);
Can you use (void*) instead of (char*)?
> + break;
> + case IH_COMP_GZIP:
> + if (gunzip
> + ((char *)CFG_LOAD_ADDR, unc_len, (uchar *) data, &len)
> + != 0) {
nit: a little ugly; can you split the gunzip call and if() into
separate lines for easy readability?
> + puts ("GUNZIP ERROR - FPGA not loaded\n");
> + return 1;
> + }
> + len = unc_len;
> + break;
> +
> +#ifdef CONFIG_BZIP2
> + case IH_COMP_BZIP2:
> + i = BZ2_bzBuffToBuffDecompress ((char *)CFG_LOAD_ADDR, punc_len,
> + (char *)data, len, 1, 0);
> + if (i != BZ_OK) {
> + printf ("BUNZIP2 ERROR %d - FPGA not loaded!\n", i);
> + return 1;
> + }
> + len = unc_len;
> + break;
> +#endif /* CONFIG_BZIP2 */
Aside: I really hate these #defs; is it feasable to make it table
driven instead to keep things clean? But maybe it's not worth it
since there are only 3 paths including the default.
> + default:
> + printf ("Unimplemented compression type %d\n", hdr.ih_comp);
> + return 1;
> + }
> +
> + return fpga_load(devnum,(char *)CFG_LOAD_ADDR,len);
> +}
> +
> /* Convert bitstream data and load into the fpga */
> int fpga_loadbitstream(unsigned long dev, char* fpgadata, size_t size)
> {
> @@ -248,6 +337,10 @@
> rc = fpga_load (dev, fpga_data, data_size);
> break;
>
> + case FPGA_LOADI:
> + rc = fpga_loadi (dev, fpga_data);
> + break;
> +
> case FPGA_LOADB:
> rc = fpga_loadbitstream(dev, fpga_data, data_size);
> break;
> @@ -298,6 +391,8 @@
> op = FPGA_INFO;
> } else if (!strcmp ("loadb", opstr)) {
> op = FPGA_LOADB;
> + } else if (!strcmp ("loadi", opstr)) {
> + op = FPGA_LOADI;
> } else if (!strcmp ("load", opstr)) {
> op = FPGA_LOAD;
> } else if (!strcmp ("loadmk", opstr)) {
> @@ -317,6 +412,7 @@
> "fpga [operation type] [device number] [image address] [image size]\n"
> "fpga operations:\n"
> "\tinfo\tlist known device information\n"
> + "\tloadi\tLoad device from u-boot image\n"
> "\tload\tLoad device from memory buffer\n"
> "\tloadb\tLoad device from bitstream buffer (Xilinx devices only)\n"
> "\tloadmk\tLoad device generated with mkimage\n"
>
>
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--
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
grant.likely at secretlab.ca
(403) 399-0195
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