On 18.7.2018 09:41, Luis Araneda wrote:
Implement FPGA bitstream loading from SPL. The bitstream is loaded from a FIT image into dynamically allocated memory before programming the FPGA.
Signed-off-by: Luis Araneda luaraneda@gmail.com
arch/arm/mach-zynq/spl.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+)
diff --git a/arch/arm/mach-zynq/spl.c b/arch/arm/mach-zynq/spl.c index 9b7c0be951..42907afa94 100644 --- a/arch/arm/mach-zynq/spl.c +++ b/arch/arm/mach-zynq/spl.c @@ -4,6 +4,8 @@ */ #include <common.h> #include <debug_uart.h> +#include <fpga.h> +#include <memalign.h> #include <spl.h>
#include <asm/io.h> @@ -93,3 +95,40 @@ int board_fit_config_name_match(const char *name) return 0; } #endif
+#ifdef CONFIG_SPL_FPGA_SUPPORT +int spl_load_fpga_image(struct spl_load_info *info, size_t length,
int nr_sectors, int sector_offset)+{
- char *data_buf;
- int ret;
- data_buf = malloc_cache_aligned(nr_sectors);
- if (!data_buf) {
debug("%s: Cannot reserve memory\n", __func__);return -ENOMEM;- }
- if (info->read(info, sector_offset, nr_sectors,
data_buf) != nr_sectors) {debug("%s: Cannot read the FPGA image\n", __func__);free(data_buf);return -EIO;- }
- memmove(data_buf, data_buf + (nr_sectors - length), length);
- debug("%s: FPGA image loaded to 0x%p (%zu bytes)\n",
__func__, data_buf, length);- ret = fpga_load(0, data_buf, length, BIT_FULL);
- if (ret) {
debug("%s: Cannot load the image to the FPGA\n", __func__);free(data_buf);return ret;- }
- free(data_buf);
- return 0;
+} +#endif
I was playing with this a little bit. There is no reason to allocate any space in malloc area because its/fit should already contain load address which you should use instead.
Thanks, Michal