[U-Boot] [PATCH] fsl-ddr: Allow system to boot if we have more than 4G of memory
Previously if we >=4G of memory and !CONFIG_PHYS_64BIT we'd report an error and hang. Instead of doing that since DDR is mapped in the lowest priority LAWs we setup the DDR controller and the max amount of memory we report back is what we can map (CONFIG_MAX_MEM_MAPPED)
Signed-off-by: Kumar Gala galak@kernel.crashing.org --- cpu/mpc8xxx/ddr/main.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/cpu/mpc8xxx/ddr/main.c b/cpu/mpc8xxx/ddr/main.c index f1ad132..305f7fb 100644 --- a/cpu/mpc8xxx/ddr/main.c +++ b/cpu/mpc8xxx/ddr/main.c @@ -429,7 +429,7 @@ fsl_ddr_compute(fsl_ddr_info_t *pinfo, unsigned int start_step) if (max_end >= 0xff) { printf("This U-Boot only supports < 4G of DDR\n"); printf("You could rebuild it with CONFIG_PHYS_64BIT\n"); - return 0; /* Ensure DDR setup failure. */ + return CONFIG_MAX_MEM_MAPPED; } #endif
On Feb 10, 2009, at 11:53 PM, Kumar Gala wrote:
Previously if we >=4G of memory and !CONFIG_PHYS_64BIT we'd report an error and hang. Instead of doing that since DDR is mapped in the lowest priority LAWs we setup the DDR controller and the max amount of memory we report back is what we can map (CONFIG_MAX_MEM_MAPPED)
Signed-off-by: Kumar Gala galak@kernel.crashing.org
Tested on 8641, fixes my boot issue in the config mentioned.
Acked-by: Becky Bruce beckyb@kernel.crashing.org
cpu/mpc8xxx/ddr/main.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/cpu/mpc8xxx/ddr/main.c b/cpu/mpc8xxx/ddr/main.c index f1ad132..305f7fb 100644 --- a/cpu/mpc8xxx/ddr/main.c +++ b/cpu/mpc8xxx/ddr/main.c @@ -429,7 +429,7 @@ fsl_ddr_compute(fsl_ddr_info_t *pinfo, unsigned int start_step) if (max_end >= 0xff) { printf("This U-Boot only supports < 4G of DDR\n"); printf("You could rebuild it with CONFIG_PHYS_64BIT\n");
return 0; /* Ensure DDR setup failure. */
return CONFIG_MAX_MEM_MAPPED;#endif
-- 1.5.6.6
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