[PATCH v2 09/10] efi: payload: early-mem: helps to correctly boot x86 linux.

[chalianis1 at gmail.com]

From: Chali Anis <chalianis1 at gmail.com>

remove the allocate EFI_ALLOCATE_MAX_ADDRESSES and use a different
memsize for x86 since the initrd could be bigger that those used in
arm. it might be refactored in the future with a more generic allocation
strategy (i.e barebox malloc memory vs an allocator for the boot loader data)
something like sdram_request_region or just allocate small memory for the
barebox allocator and implement a way to allocate memory for kernel/initrd
directly from efi.

Signed-off-by: Chali Anis <chalianis1 at gmail.com>
---
 efi/payload/early-mem.c | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/efi/payload/early-mem.c b/efi/payload/early-mem.c
index 0f79a8c30694..150a2a595afc 100644
--- a/efi/payload/early-mem.c
+++ b/efi/payload/early-mem.c
@@ -9,18 +9,17 @@ void *efi_earlymem_alloc(const struct efi_system_table *sys_table,
 			 size_t *memsize, enum efi_memory_type mem_type)
 {
 	struct efi_boot_services *bs = sys_table->boottime;
-	enum efi_allocate_type alloc_type = EFI_ALLOCATE_ANY_PAGES;
 	efi_physical_addr_t mem;
 	efi_status_t efiret;
+	size_t m_sz;
 
-	if (IS_ENABLED(CONFIG_X86)) {
-		/* Try to stay clear of memory mapped devices */
-		alloc_type = EFI_ALLOCATE_MAX_ADDRESS;
-		mem = SZ_1G - 1;
-	}
+	if (IS_ENABLED(CONFIG_X86))
+		m_sz = SZ_512M;
+	else
+		m_sz = SZ_256M;
 
-	for (*memsize = SZ_256M; *memsize >= SZ_8M; *memsize /= 2) {
-		efiret  = bs->allocate_pages(alloc_type, mem_type,
+	for (*memsize = m_sz; *memsize >= SZ_8M; *memsize /= 2) {
+		efiret  = bs->allocate_pages(EFI_ALLOCATE_ANY_PAGES, mem_type,
 					     *memsize / EFI_PAGE_SIZE, &mem);
 		if (!EFI_ERROR(efiret) || efiret != EFI_OUT_OF_RESOURCES)
 			break;
-- 
2.34.1