powerpc/ps3: Add highmem repository write routines

Add routines to allow Linux based bootloaders to create and/or
modify highmem region info in the PS3 system repository where
it can be retrived by later boot stages.

Signed-off-by: Geoff Levand <geoff@infradead.org>

diff --git a/arch/powerpc/platforms/ps3/platform.h b/arch/powerpc/platforms/ps3/platform.h
index 1a633ed0fe98744d8994d7e6367180a11ab59a96..4012a86515cdf7e7d83aba3cbd934d4892d8146f 100644 (file)
--- a/arch/powerpc/platforms/ps3/platform.h
+++ b/arch/powerpc/platforms/ps3/platform.h
@@ -189,6 +189,15 @@ int ps3_repository_read_region_total(u64 *region_total);
 int ps3_repository_read_mm_info(u64 *rm_base, u64 *rm_size,
        u64 *region_total);
 
+int ps3_repository_write_highmem_region_count(unsigned int region_count);
+int ps3_repository_write_highmem_base(unsigned int region_index,
+       u64 highmem_base);
+int ps3_repository_write_highmem_size(unsigned int region_index,
+       u64 highmem_size);
+int ps3_repository_write_highmem_info(unsigned int region_index,
+       u64 highmem_base, u64 highmem_size);
+int ps3_repository_delete_highmem_info(unsigned int region_index);
+
 /* repository pme info */
 
 int ps3_repository_read_num_be(unsigned int *num_be);

diff --git a/arch/powerpc/platforms/ps3/repository.c b/arch/powerpc/platforms/ps3/repository.c
index b31142cb9e53965f075fcc5bfb1598dec37d400f..c73f3a68d2a7655793c7381840dce538b0c7c048 100644 (file)
--- a/arch/powerpc/platforms/ps3/repository.c
+++ b/arch/powerpc/platforms/ps3/repository.c
@@ -1058,6 +1058,80 @@ static int write_node(u64 n1, u64 n2, u64 n3, u64 n4, u64 v1, u64 v2)
        return 0;
 }
 
+int ps3_repository_write_highmem_region_count(unsigned int region_count)
+{
+       int result;
+       u64 v1 = (u64)region_count;
+
+       result = write_node(
+               make_first_field("highmem", 0),
+               make_field("region", 0),
+               make_field("count", 0),
+               0,
+               v1, 0);
+       return result;
+}
+
+int ps3_repository_write_highmem_base(unsigned int region_index,
+       u64 highmem_base)
+{
+       return write_node(
+               make_first_field("highmem", 0),
+               make_field("region", region_index),
+               make_field("base", 0),
+               0,
+               highmem_base, 0);
+}
+
+int ps3_repository_write_highmem_size(unsigned int region_index,
+       u64 highmem_size)
+{
+       return write_node(
+               make_first_field("highmem", 0),
+               make_field("region", region_index),
+               make_field("size", 0),
+               0,
+               highmem_size, 0);
+}
+
+int ps3_repository_write_highmem_info(unsigned int region_index,
+       u64 highmem_base, u64 highmem_size)
+{
+       int result;
+
+       result = ps3_repository_write_highmem_base(region_index, highmem_base);
+       return result ? result
+               : ps3_repository_write_highmem_size(region_index, highmem_size);
+}
+
+static int ps3_repository_delete_highmem_base(unsigned int region_index)
+{
+       return delete_node(
+               make_first_field("highmem", 0),
+               make_field("region", region_index),
+               make_field("base", 0),
+               0);
+}
+
+static int ps3_repository_delete_highmem_size(unsigned int region_index)
+{
+       return delete_node(
+               make_first_field("highmem", 0),
+               make_field("region", region_index),
+               make_field("size", 0),
+               0);
+}
+
+int ps3_repository_delete_highmem_info(unsigned int region_index)
+{
+       int result;
+
+       result = ps3_repository_delete_highmem_base(region_index);
+       result += ps3_repository_delete_highmem_size(region_index);
+
+       return result ? -1 : 0;
+}
+
 #endif /* defined(CONFIG_PS3_WRITE_REPOSITORY) */
 
 #if defined(DEBUG)