x86: efi_loader: Use efi_add_conventional_memory_map()
Use efi_add_conventional_memory_map() to configure EFI conventional memory
properly with ram_top value. This will give 32-bit mode U-Boot proper
conventional memory regions even if e820 has an entry which is greater than
32-bit address space.
Signed-off-by: Aiden Park <aiden.park@intel.com>
Tested-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
[bmeng: fixed some typos in the commit message]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/arch/x86/lib/e820.c b/arch/x86/lib/e820.c
index d6ae2c4..26da4d2 100644
--- a/arch/x86/lib/e820.c
+++ b/arch/x86/lib/e820.c
@@ -41,14 +41,17 @@
{
struct e820_entry e820[E820MAX];
unsigned int i, num;
- u64 start, pages;
+ u64 start, pages, ram_top;
int type;
num = install_e820_map(ARRAY_SIZE(e820), e820);
+ ram_top = (u64)gd->ram_top & ~EFI_PAGE_MASK;
+ if (!ram_top)
+ ram_top = 0x100000000ULL;
+
for (i = 0; i < num; ++i) {
start = e820[i].addr;
- pages = ALIGN(e820[i].size, EFI_PAGE_SIZE) >> EFI_PAGE_SHIFT;
switch (e820[i].type) {
case E820_RAM:
@@ -69,7 +72,15 @@
break;
}
- efi_add_memory_map(start, pages, type, false);
+ if (type == EFI_CONVENTIONAL_MEMORY) {
+ efi_add_conventional_memory_map(start,
+ start + e820[i].size,
+ ram_top);
+ } else {
+ pages = ALIGN(e820[i].size, EFI_PAGE_SIZE)
+ >> EFI_PAGE_SHIFT;
+ efi_add_memory_map(start, pages, type, false);
+ }
}
}
#endif /* CONFIG_IS_ENABLED(EFI_LOADER) */
