[PATCH v3 39/62] arm/acpi: Read acpi memory info from uefi
shannon.zhao at linaro.org
shannon.zhao at linaro.org
Tue Nov 17 01:40:38 PST 2015
From: Parth Dixit <parth.dixit at linaro.org>
ACPI memory is seperate from conventional memory and should be marked
as reserved while passing to DOM0. Create a new meminfo structure to
store all the acpi tables listed in uefi.
Signed-off-by: Parth Dixit <parth.dixit at linaro.org>
Signed-off-by: Shannon Zhao <shannon.zhao at linaro.org>
---
xen/arch/arm/efi/efi-boot.h | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/xen/arch/arm/efi/efi-boot.h b/xen/arch/arm/efi/efi-boot.h
index e427e5f..c58caca 100644
--- a/xen/arch/arm/efi/efi-boot.h
+++ b/xen/arch/arm/efi/efi-boot.h
@@ -17,6 +17,9 @@ void __flush_dcache_area(const void *vaddr, unsigned long size);
static struct file __initdata dtbfile;
static void __initdata *fdt;
static void __initdata *memmap;
+#ifdef CONFIG_ACPI
+static struct meminfo __initdata acpi_mem;
+#endif
static int __init setup_chosen_node(void *fdt, int *addr_cells, int *size_cells)
{
@@ -129,6 +132,9 @@ static EFI_STATUS __init efi_process_memory_map_bootinfo(EFI_MEMORY_DESCRIPTOR *
{
int Index;
int i = 0;
+#ifdef CONFIG_ACPI
+ int j = 0;
+#endif
EFI_MEMORY_DESCRIPTOR *desc_ptr = map;
for ( Index = 0; Index < (mmap_size / desc_size); Index++ )
@@ -148,10 +154,27 @@ static EFI_STATUS __init efi_process_memory_map_bootinfo(EFI_MEMORY_DESCRIPTOR *
bootinfo.mem.bank[i].size = desc_ptr->NumberOfPages * EFI_PAGE_SIZE;
++i;
}
+#ifdef CONFIG_ACPI
+ else if ( desc_ptr->Type == EfiACPIReclaimMemory )
+ {
+ if ( j >= NR_MEM_BANKS )
+ {
+ PrintStr(L"Error: All " __stringify(NR_MEM_BANKS)
+ " acpi meminfo mem banks exhausted.\r\n");
+ return EFI_LOAD_ERROR;
+ }
+ acpi_mem.bank[j].start = desc_ptr->PhysicalStart;
+ acpi_mem.bank[j].size = desc_ptr->NumberOfPages * EFI_PAGE_SIZE;
+ ++j;
+ }
+#endif
desc_ptr = NextMemoryDescriptor(desc_ptr, desc_size);
}
bootinfo.mem.nr_banks = i;
+#ifdef CONFIG_ACPI
+ acpi_mem.nr_banks = j;
+#endif
return EFI_SUCCESS;
}
--
2.1.0
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