[Xen-devel] [PATCH v8 12/21] arm/acpi: Prepare EFI memory descriptor for Dom0

[Shannon Zhao <zhaoshenglong@xxxxxxxxxx>]

From: Shannon Zhao <shannon.zhao@xxxxxxxxxx>

Create EFI memory descriptors to tell Dom0 the RAM region information,
ACPI table regions and EFI tables reserved regions.

Signed-off-by: Parth Dixit <parth.dixit@xxxxxxxxxx>
Signed-off-by: Shannon Zhao <shannon.zhao@xxxxxxxxxx>
Reviewed-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Acked-by: Julien Grall <julien.grall@xxxxxxx>
---
 xen/arch/arm/domain_build.c |  1 +
 xen/arch/arm/efi/efi-dom0.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
 xen/include/asm-arm/setup.h |  4 ++++
 3 files changed, 49 insertions(+)

diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index 6780fb7..dd4a8ba 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -1721,6 +1721,7 @@ static int prepare_acpi(struct domain *d, struct 
kernel_info *kinfo)
 
     acpi_map_other_tables(d);
     acpi_create_efi_system_table(d, tbl_add);
+    acpi_create_efi_mmap_table(d, &kinfo->mem, tbl_add);
 
     return 0;
 }
diff --git a/xen/arch/arm/efi/efi-dom0.c b/xen/arch/arm/efi/efi-dom0.c
index f4f84b6..cf71bf4 100644
--- a/xen/arch/arm/efi/efi-dom0.c
+++ b/xen/arch/arm/efi/efi-dom0.c
@@ -24,6 +24,7 @@
 #include "efi.h"
 #include "efi-dom0.h"
 #include <xen/sched.h>
+#include <xen/pfn.h>
 #include <asm/setup.h>
 #include <asm/acpi.h>
 #include "../../../common/decompress.h"
@@ -94,6 +95,49 @@ void __init acpi_create_efi_system_table(struct domain *d,
     tbl_add[TBL_EFIT].size = table_size;
 }
 
+void __init acpi_create_efi_mmap_table(struct domain *d,
+                                       const struct meminfo *mem,
+                                       struct membank tbl_add[])
+{
+    EFI_MEMORY_DESCRIPTOR *memory_map;
+    unsigned int i, offset;
+    u8 *base_ptr;
+
+    base_ptr = d->arch.efi_acpi_table
+               + acpi_get_table_offset(tbl_add, TBL_MMAP);
+    memory_map = (EFI_MEMORY_DESCRIPTOR *)base_ptr;
+
+    offset = 0;
+    for( i = 0; i < mem->nr_banks; i++, offset++ )
+    {
+        memory_map[offset].Type = EfiConventionalMemory;
+        memory_map[offset].PhysicalStart = mem->bank[i].start;
+        BUG_ON(mem->bank[i].size & EFI_PAGE_MASK);
+        memory_map[offset].NumberOfPages = 
EFI_SIZE_TO_PAGES(mem->bank[i].size);
+        memory_map[offset].Attribute = EFI_MEMORY_WB;
+    }
+
+    for( i = 0; i < acpi_mem.nr_banks; i++, offset++ )
+    {
+        memory_map[offset].Type = EfiACPIReclaimMemory;
+        memory_map[offset].PhysicalStart = acpi_mem.bank[i].start;
+        BUG_ON(acpi_mem.bank[i].size & EFI_PAGE_MASK);
+        memory_map[offset].NumberOfPages = 
EFI_SIZE_TO_PAGES(acpi_mem.bank[i].size);
+        memory_map[offset].Attribute = EFI_MEMORY_WB;
+    }
+
+    memory_map[offset].Type = EfiACPIReclaimMemory;
+    memory_map[offset].PhysicalStart = d->arch.efi_acpi_gpa;
+    BUG_ON(d->arch.efi_acpi_len & EFI_PAGE_MASK);
+    memory_map[offset].NumberOfPages = EFI_SIZE_TO_PAGES(d->arch.efi_acpi_len);
+    memory_map[offset].Attribute = EFI_MEMORY_WB;
+
+    tbl_add[TBL_MMAP].start = d->arch.efi_acpi_gpa
+                              + acpi_get_table_offset(tbl_add, TBL_MMAP);
+    tbl_add[TBL_MMAP].size = sizeof(EFI_MEMORY_DESCRIPTOR)
+                             * (mem->nr_banks + acpi_mem.nr_banks + 1);
+}
+
 /*
  * Local variables:
  * mode: C
diff --git a/xen/include/asm-arm/setup.h b/xen/include/asm-arm/setup.h
index fc9fd7c..9a71e90 100644
--- a/xen/include/asm-arm/setup.h
+++ b/xen/include/asm-arm/setup.h
@@ -56,6 +56,10 @@ size_t estimate_efi_size(int mem_nr_banks);
 void acpi_create_efi_system_table(struct domain *d,
                                   struct membank tbl_add[]);
 
+void acpi_create_efi_mmap_table(struct domain *d,
+                                const struct meminfo *mem,
+                                struct membank tbl_add[]);
+
 int construct_dom0(struct domain *d);
 
 void discard_initial_modules(void);
-- 
2.0.4



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