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kboot: refactor dt_carveout_reserved_regions()

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The main part of function will be used to add a reserved memory region
for the framebuffer from "/vram" instead of the carveout.

Signed-off-by: Janne Grunau <j@jannau.net>
This commit is contained in:
Janne Grunau 2022-12-22 15:42:35 +01:00 committed by Hector Martin
parent 3d28ac4d6f
commit 2667b10054
1 changed files with 21 additions and 6 deletions
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27
src/kboot.c
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@ -1066,18 +1066,22 @@ struct disp_mapping {
bool map_piodma;
};
struct mem_region {
u64 paddr;
u64 size;
};
static int dt_add_reserved_regions(const char *dcp_alias, const char *disp_alias,
const char *piodma_alias, struct disp_mapping *maps,
struct mem_region *region, u32 num_maps);
static int dt_carveout_reserved_regions(const char *dcp_alias, const char *disp_alias,
const char *piodma_alias, struct disp_mapping *maps,
u32 num_maps)
{
int ret = 0;
dart_dev_t *dart_dcp = NULL, *dart_disp = NULL, *dart_piodma = NULL;
uint32_t dcp_phandle = 0, disp_phandle = 0, piodma_phandle = 0;
struct {
u64 paddr;
u64 size;
} region[MAX_DISP_MAPPINGS];
struct mem_region region[MAX_DISP_MAPPINGS];
assert(num_maps <= MAX_DISP_MAPPINGS);
@ -1112,6 +1116,17 @@ static int dt_carveout_reserved_regions(const char *dcp_alias, const char *disp_
region[i].size = phys_map[1];
}
return dt_add_reserved_regions(dcp_alias, disp_alias, piodma_alias, maps, region, num_maps);
}
static int dt_add_reserved_regions(const char *dcp_alias, const char *disp_alias,
const char *piodma_alias, struct disp_mapping *maps,
struct mem_region *region, u32 num_maps)
{
int ret = 0;
dart_dev_t *dart_dcp = NULL, *dart_disp = NULL, *dart_piodma = NULL;
uint32_t dcp_phandle = 0, disp_phandle = 0, piodma_phandle = 0;
/* Check for display device aliases, if one is missing assume it is an old DT
* without display nodes and return without error.
* Otherwise init each dart and retrieve the node's phandle.