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>

diff --git a/board/atmel/atngw100/atngw100.c b/board/atmel/atngw100/atngw100.c
index 004d8da..4580f55 100644 (file)
--- 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 c36cb57..d91d594 100644 (file)
--- 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);

diff --git a/board/earthlcd/favr-32-ezkit/favr-32-ezkit.c b/board/earthlcd/favr-32-ezkit/favr-32-ezkit.c
index 8af680f..d2843c9 100644 (file)
--- a/board/earthlcd/favr-32-ezkit/favr-32-ezkit.c
+++ b/board/earthlcd/favr-32-ezkit/favr-32-ezkit.c
@@ -68,13 +68,11 @@ 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/mimc/mimc200/mimc200.c b/board/mimc/mimc200/mimc200.c
index cc0f137..9940669 100644 (file)
--- a/board/mimc/mimc200/mimc200.c
+++ b/board/mimc/mimc200/mimc200.c
@@ -153,13 +153,11 @@ 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/miromico/hammerhead/hammerhead.c b/board/miromico/hammerhead/hammerhead.c
index 8b3e22c..5ab999e 100644 (file)
--- a/board/miromico/hammerhead/hammerhead.c
+++ b/board/miromico/hammerhead/hammerhead.c
@@ -80,13 +80,11 @@ 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);