[U-Boot-Users] [PATCH 5/5 RESEND] Remove bit swapping in Xilinx Spartan bitfile loading
Matthias Fuchs
matthias.fuchs at esd-electronics.com
Thu Dec 27 17:13:11 CET 2007
This patch removes the unnecessary bit swapping when
booting .bit files with the 'fpga loadb' command.
Signed-off-by: Matthias Fuchs <matthias.fuchs at esd-electronics.com>
---
common/cmd_fpga.c | 37 +------------------------------------
1 files changed, 1 insertions(+), 36 deletions(-)
diff --git a/common/cmd_fpga.c b/common/cmd_fpga.c
index fb24395..f55447a 100644
--- a/common/cmd_fpga.c
+++ b/common/cmd_fpga.c
@@ -60,12 +60,9 @@ int fpga_loadbitstream(unsigned long dev, char* fpgadata, size_t size)
{
#if defined(CONFIG_FPGA_XILINX)
unsigned int length;
- unsigned char* swapdata;
unsigned int swapsize;
char buffer[80];
- unsigned char *ptr;
unsigned char *dataptr;
- unsigned char data;
unsigned int i;
int rc;
@@ -143,39 +140,7 @@ int fpga_loadbitstream(unsigned long dev, char* fpgadata, size_t size)
dataptr+=4;
printf(" bytes in bitstream = %d\n", swapsize);
- /* check consistency of length obtained */
- if (swapsize >= size) {
- printf("%s: Could not find right length of data in bitstream\n",
- __FUNCTION__);
- return FPGA_FAIL;
- }
-
- /* allocate memory */
- swapdata = (unsigned char *)malloc(swapsize);
- if (swapdata == NULL) {
- printf("%s: Could not allocate %d bytes memory !\n",
- __FUNCTION__, swapsize);
- return FPGA_FAIL;
- }
-
- /* read data into memory and swap bits */
- ptr = swapdata;
- for (i = 0; i < swapsize; i++) {
- data = 0x00;
- data |= (*dataptr & 0x01) << 7;
- data |= (*dataptr & 0x02) << 5;
- data |= (*dataptr & 0x04) << 3;
- data |= (*dataptr & 0x08) << 1;
- data |= (*dataptr & 0x10) >> 1;
- data |= (*dataptr & 0x20) >> 3;
- data |= (*dataptr & 0x40) >> 5;
- data |= (*dataptr & 0x80) >> 7;
- *ptr++ = data;
- dataptr++;
- }
-
- rc = fpga_load(dev, swapdata, swapsize);
- free(swapdata);
+ rc = fpga_load(dev, dataptr, swapsize);
return rc;
#else
printf("Bitstream support only for Xilinx devices\n");
--
1.5.3
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