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libpayload arm64: Allocate framebuffer range 

Allocate noncacheable memory for frame buffer and save base
address to sys_libinfo.

BRANCH=none
BUG=chrome-os-partner:31936
TEST=build and test on ryu

Change-Id: I19a8079616376dc7c1a8ecdbd7499c2553b8c6c3
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: cebb5650167264902548339bb1a2b428f3b7f4ed
Original-Change-Id: I7bfbfefb92001632ce3d572a50e46188795c4ab8
Original-Signed-off-by: Jimmy Zhang <jimmzhang@nvidia.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/226404
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/8796
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Jimmy Zhang 2014-10-09 18:42:00 -07:00 committed by Patrick Georgi
parent 8a01eb6052
commit be1b4f171e
2 changed files with 51 additions and 0 deletions
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49
payloads/libpayload/arch/arm64/mmu.c
View File

@ -616,6 +616,25 @@ static struct mmu_memrange *mmu_add_dma_range(struct mmu_ranges *mmu_ranges)
return mmu_alloc_range(mmu_ranges, &prop);
}
static struct mmu_memrange *_mmu_add_fb_range(
uint32_t size,
struct mmu_ranges *mmu_ranges)
{
struct mmu_new_range_prop prop;
prop.type = TYPE_DMA_MEM;
/* make sure to allocate a size of multiple of GRANULE_SIZE */
size = ALIGN_UP(size, GRANULE_SIZE);
prop.size = size;
prop.lim_excl = MIN_64_BIT_ADDR;
prop.align = MB_SIZE;
prop.is_valid_range = NULL;
prop.src_type = TYPE_NORMAL_MEM;
return mmu_alloc_range(mmu_ranges, &prop);
}
/*
* Func: mmu_extract_ranges
* Desc: Assumption is that coreboot tables have memranges in sorted
@ -653,6 +672,33 @@ static void mmu_extract_ranges(struct memrange *cb_ranges,
}
}
static void mmu_add_fb_range(struct mmu_ranges *mmu_ranges)
{
struct mmu_memrange *fb_range;
struct cb_framebuffer *framebuffer = lib_sysinfo.framebuffer;
uint32_t fb_size;
/*
* Check whether framebuffer is needed
* or framebuffer address has been set already
*/
if (framebuffer == NULL)
return;
if (framebuffer->physical_address)
return;
fb_size = framebuffer->bytes_per_line * framebuffer->y_resolution;
if (!fb_size)
return;
/* Allocate framebuffer */
fb_range = _mmu_add_fb_range(fb_size, mmu_ranges);
if (fb_range == NULL)
mmu_error();
/* Set framebuffer address */
framebuffer->physical_address = fb_range->base;
}
/*
* Func: mmu_init_ranges
* Desc: Initialize mmu_memranges based on the memranges obtained from coreboot
@ -673,6 +719,9 @@ struct mmu_memrange *mmu_init_ranges_from_sysinfo(struct memrange *cb_ranges,
/* Get a range for dma */
dma_range = mmu_add_dma_range(mmu_ranges);
/* Get a range for framebuffer */
mmu_add_fb_range(mmu_ranges);
if (dma_range == NULL)
mmu_error();

2
payloads/libpayload/include/arm64/arch/mmu.h
View File

@ -181,6 +181,8 @@ extern char _start[], _end[];
#define DMA_DEFAULT_SIZE (0x20 * GRANULE_SIZE)
#define TTB_DEFAULT_SIZE 0x100000
#define MB_SIZE (1UL << 20)
/* Initialize the MMU TTB tables using the mmu_ranges */
uint64_t mmu_init(struct mmu_ranges *mmu_ranges);