ExternalVendorCode/genode
1
0
Fork 0
mirror of https://github.com/genodelabs/genode.git synced 2024-12-21 22:47:50 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

nova: remove framebuffer in uefi mode from ram allocator

Browse Source 
Issue #2242
This commit is contained in:
Alexander Boettcher 2017-08-29 18:24:43 +02:00 committed by Christian Helmuth
parent 0adbd1ce24
commit fd59c5f92a
1 changed files with 33 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

52
repos/base-nova/src/core/platform.cc
View File

@ -474,11 +474,36 @@ Platform::Platform() :
_io_mem_alloc.add_range(0, ~0xfffUL);
Hip::Mem_desc *mem_desc = (Hip::Mem_desc *)mem_desc_base;
struct mbfb_t {
uint64_t addr = 0;
union {
uint64_t size;
struct {
uint32_t height;
uint32_t width;
};
};
union {
uint32_t aux;
struct {
uint8_t bpp;
uint8_t type;
uint8_t reserved[2];
};
};
} mbi_fb;
memset(&mbi_fb, 0, sizeof(mbi_fb));
/*
* All "available" ram must be added to our physical allocator before all
* non "available" regions that overlaps with ram get removed.
*/
for (unsigned i = 0; i < num_mem_desc; i++, mem_desc++) {
if (mem_desc->type == Hip::Mem_desc::FRAMEBUFFER) {
mbi_fb.addr = mem_desc->addr;
mbi_fb.size = mem_desc->size;
mbi_fb.aux = mem_desc->aux;
}
if (mem_desc->type != Hip::Mem_desc::AVAILABLE_MEMORY) continue;
if (verbose_boot_info) {
@ -524,6 +549,14 @@ Platform::Platform() :
addr_t base = trunc_page(mem_desc->addr);
size_t size = mem_desc->size;
/* remove framebuffer from available memory */
if (mem_desc->type == Hip::Mem_desc::FRAMEBUFFER) {
/* align width to 16 byte size */
addr_t const width = (mbi_fb.width + 16 - 1) & ~0xful;
/* calculate size of framebuffer */
size = width * mbi_fb.height * mbi_fb.bpp / 4;
}
/* truncate size if base+size larger then natural 32/64 bit boundary */
if (mem_desc->addr + size < mem_desc->addr)
size = 0UL - base;
@ -598,25 +631,6 @@ Platform::Platform() :
uint64_t rsdt = 0UL;
uint64_t xsdt = 0UL;
struct mbfb_t {
uint64_t addr = 0;
union {
uint64_t size;
struct {
uint32_t height;
uint32_t width;
};
};
union {
uint32_t aux;
struct {
uint8_t bpp;
uint8_t type;
uint8_t reserved[2];
};
};
} mbi_fb;
mem_desc = (Hip::Mem_desc *)mem_desc_base;
for (unsigned i = 0; i < num_mem_desc; i++, mem_desc++) {
if (mem_desc->type == Hip::Mem_desc::ACPI_RSDT) rsdt = mem_desc->addr;