grub2/0056-efi-refactor-grub_efi_allocate_pages.patch

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From dd5fde2df83c5c03b7ba04d2cc5b7be96de8da7b Mon Sep 17 00:00:00 2001
From: Leif Lindholm <leif.lindholm@linaro.org>
Date: Thu, 3 Aug 2017 11:04:23 +0100
Subject: [PATCH 056/198] efi: refactor grub_efi_allocate_pages
Expose a new function, grub_efi_allocate_pages_real(), making it possible
to specify allocation type and memory type as supported by the UEFI
AllocatePages boot service.
Make grub_efi_allocate_pages() a consumer of the new function,
maintaining its old functionality.
Also delete some left-around #if 1/#else blocks in the affected
functions.
Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
---
grub-core/kern/efi/mm.c | 46 ++++++++++++++++++++++++----------------------
include/grub/efi/efi.h | 5 +++++
2 files changed, 29 insertions(+), 22 deletions(-)
diff --git a/grub-core/kern/efi/mm.c b/grub-core/kern/efi/mm.c
index 20a47aaf5..d88bc5e43 100644
--- a/grub-core/kern/efi/mm.c
+++ b/grub-core/kern/efi/mm.c
@@ -51,36 +51,20 @@ int grub_efi_is_finished = 0;
/* Allocate pages. Return the pointer to the first of allocated pages. */
void *
-grub_efi_allocate_pages (grub_efi_physical_address_t address,
- grub_efi_uintn_t pages)
+grub_efi_allocate_pages_real (grub_efi_physical_address_t address,
+ grub_efi_uintn_t pages,
+ grub_efi_allocate_type_t alloctype,
+ grub_efi_memory_type_t memtype)
{
- grub_efi_allocate_type_t type;
grub_efi_status_t status;
grub_efi_boot_services_t *b;
-#if 1
/* Limit the memory access to less than 4GB for 32-bit platforms. */
if (address > GRUB_EFI_MAX_USABLE_ADDRESS)
return 0;
-#endif
-
-#if 1
- if (address == 0)
- {
- type = GRUB_EFI_ALLOCATE_MAX_ADDRESS;
- address = GRUB_EFI_MAX_USABLE_ADDRESS;
- }
- else
- type = GRUB_EFI_ALLOCATE_ADDRESS;
-#else
- if (address == 0)
- type = GRUB_EFI_ALLOCATE_ANY_PAGES;
- else
- type = GRUB_EFI_ALLOCATE_ADDRESS;
-#endif
b = grub_efi_system_table->boot_services;
- status = efi_call_4 (b->allocate_pages, type, GRUB_EFI_LOADER_DATA, pages, &address);
+ status = efi_call_4 (b->allocate_pages, alloctype, memtype, pages, &address);
if (status != GRUB_EFI_SUCCESS)
return 0;
@@ -89,7 +73,7 @@ grub_efi_allocate_pages (grub_efi_physical_address_t address,
/* Uggh, the address 0 was allocated... This is too annoying,
so reallocate another one. */
address = GRUB_EFI_MAX_USABLE_ADDRESS;
- status = efi_call_4 (b->allocate_pages, type, GRUB_EFI_LOADER_DATA, pages, &address);
+ status = efi_call_4 (b->allocate_pages, alloctype, memtype, pages, &address);
grub_efi_free_pages (0, pages);
if (status != GRUB_EFI_SUCCESS)
return 0;
@@ -98,6 +82,24 @@ grub_efi_allocate_pages (grub_efi_physical_address_t address,
return (void *) ((grub_addr_t) address);
}
+void *
+grub_efi_allocate_pages (grub_efi_physical_address_t address,
+ grub_efi_uintn_t pages)
+{
+ grub_efi_allocate_type_t alloctype;
+
+ if (address == 0)
+ {
+ alloctype = GRUB_EFI_ALLOCATE_MAX_ADDRESS;
+ address = GRUB_EFI_MAX_USABLE_ADDRESS;
+ }
+ else
+ alloctype = GRUB_EFI_ALLOCATE_ADDRESS;
+
+ return grub_efi_allocate_pages_real (address, pages, alloctype,
+ GRUB_EFI_LOADER_DATA);
+}
+
/* Free pages starting from ADDRESS. */
void
grub_efi_free_pages (grub_efi_physical_address_t address,
diff --git a/include/grub/efi/efi.h b/include/grub/efi/efi.h
index e9c601f34..b4cbebf38 100644
--- a/include/grub/efi/efi.h
+++ b/include/grub/efi/efi.h
@@ -38,6 +38,11 @@ void *EXPORT_FUNC(grub_efi_open_protocol) (grub_efi_handle_t handle,
int EXPORT_FUNC(grub_efi_set_text_mode) (int on);
void EXPORT_FUNC(grub_efi_stall) (grub_efi_uintn_t microseconds);
void *
+EXPORT_FUNC(grub_efi_allocate_pages_real) (grub_efi_physical_address_t address,
+ grub_efi_uintn_t pages,
+ grub_efi_allocate_type_t alloctype,
+ grub_efi_memory_type_t memtype);
+void *
EXPORT_FUNC(grub_efi_allocate_pages) (grub_efi_physical_address_t address,
grub_efi_uintn_t pages);
void EXPORT_FUNC(grub_efi_free_pages) (grub_efi_physical_address_t address,
--
2.14.3