diff options
| author | Haavard Skinnemoen <haavard.skinnemoen@atmel.com> | 2010-08-12 13:52:53 +0700 |
|---|---|---|
| committer | Reinhard Meyer <u-boot@emk-elektronik.de> | 2010-09-03 15:12:52 +0200 |
| commit | 9cec2fc209a000655af77256a39ede7c7d441e56 (patch) | |
| tree | 3474321f8af38d80a2416f61606e929dc45521af /board/atmel | |
| parent | 8d1334a7877662c5b13205b399840196c7fa0aa4 (diff) | |
| download | talos-obmc-uboot-9cec2fc209a000655af77256a39ede7c7d441e56.tar.gz talos-obmc-uboot-9cec2fc209a000655af77256a39ede7c7d441e56.zip | |
avr32: Use uncached() macro to get an address for SDRAM init
The paging system which is required to set up caching properties has not
yet been initialized when the SDRAM is initialized. So when the
map_physmem() function is converted to return the physical address
unchanged, the SDRAM initialization will break on some boards.
The avr32-specific uncached() macro will return an address which will
always cause uncached accessed to be made. Since this happens in the
board code, using avr32-specific features should be ok, and will allow
the SDRAM initialization to keep working.
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Diffstat (limited to 'board/atmel')
| -rw-r--r-- | board/atmel/atngw100/atngw100.c | 4 | ||||
| -rw-r--r-- | board/atmel/atstk1000/atstk1000.c | 4 |
2 files changed, 2 insertions, 6 deletions
diff --git a/board/atmel/atngw100/atngw100.c b/board/atmel/atngw100/atngw100.c index 004d8daa90..4580f550df 100644 --- a/board/atmel/atngw100/atngw100.c +++ b/board/atmel/atngw100/atngw100.c @@ -75,13 +75,11 @@ phys_size_t initdram(int board_type) unsigned long actual_size; void *sdram_base; - sdram_base = map_physmem(EBI_SDRAM_BASE, EBI_SDRAM_SIZE, MAP_NOCACHE); + sdram_base = uncached(EBI_SDRAM_BASE); expected_size = sdram_init(sdram_base, &sdram_config); actual_size = get_ram_size(sdram_base, expected_size); - unmap_physmem(sdram_base, EBI_SDRAM_SIZE); - if (expected_size != actual_size) printf("Warning: Only %lu of %lu MiB SDRAM is working\n", actual_size >> 20, expected_size >> 20); diff --git a/board/atmel/atstk1000/atstk1000.c b/board/atmel/atstk1000/atstk1000.c index c36cb5717b..d91d5940b5 100644 --- a/board/atmel/atstk1000/atstk1000.c +++ b/board/atmel/atstk1000/atstk1000.c @@ -97,13 +97,11 @@ phys_size_t initdram(int board_type) unsigned long actual_size; void *sdram_base; - sdram_base = map_physmem(EBI_SDRAM_BASE, EBI_SDRAM_SIZE, MAP_NOCACHE); + sdram_base = uncached(EBI_SDRAM_BASE); expected_size = sdram_init(sdram_base, &sdram_config); actual_size = get_ram_size(sdram_base, expected_size); - unmap_physmem(sdram_base, EBI_SDRAM_SIZE); - if (expected_size != actual_size) printf("Warning: Only %lu of %lu MiB SDRAM is working\n", actual_size >> 20, expected_size >> 20); |
