[Xen-devel] [PATCH v5 12/22] arm/acpi: Prepare EFI memory descriptor for Dom0

[Shannon Zhao <zhaoshenglong@xxxxxxxxxx>]

From: Shannon Zhao <shannon.zhao@xxxxxxxxxx>

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

Signed-off-by: Parth Dixit <parth.dixit@xxxxxxxxxx>
Signed-off-by: Shannon Zhao <shannon.zhao@xxxxxxxxxx>
---
v5: move to efi-dom0.c
---
 xen/arch/arm/domain_build.c |  2 ++
 xen/arch/arm/efi/efi-dom0.c | 47 +++++++++++++++++++++++++++++++++++++++++++++
 xen/include/asm-arm/setup.h |  5 +++++
 3 files changed, 54 insertions(+)

diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index 613551c..008fc76 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -1688,6 +1688,8 @@ static int prepare_acpi(struct domain *d, struct 
kernel_info *kinfo)
     acpi_map_other_tables(d);
     acpi_create_efi_system_table(d->arch.efi_acpi_gpa, d->arch.efi_acpi_table,
                                  tbl_add);
+    acpi_create_efi_mmap_table(d->arch.efi_acpi_gpa, d->arch.efi_acpi_len,
+                               d->arch.efi_acpi_table, &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 36a1283..0ff6309 100644
--- a/xen/arch/arm/efi/efi-dom0.c
+++ b/xen/arch/arm/efi/efi-dom0.c
@@ -22,6 +22,7 @@
  */
 
 #include "efi.h"
+#include <xen/pfn.h>
 #include <asm/setup.h>
 #include <asm/acpi.h>
 
@@ -90,3 +91,49 @@ void __init acpi_create_efi_system_table(paddr_t paddr, void 
*efi_acpi_table,
     tbl_add[TBL_EFIT].start = table_addr;
     tbl_add[TBL_EFIT].size = table_size;
 }
+
+void __init acpi_create_efi_mmap_table(paddr_t paddr, paddr_t size,
+                                       void *efi_acpi_table,
+                                       const struct meminfo *mem,
+                                       struct membank tbl_add[])
+{
+    EFI_MEMORY_DESCRIPTOR *memory_map;
+    struct meminfo *acpi_mem;
+    int acpi_mem_nr_banks = 0;
+    unsigned int i, offset;
+    u8 *base_ptr;
+
+    base_ptr = 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;
+        memory_map[offset].NumberOfPages = PFN_UP(mem->bank[i].size);
+        memory_map[offset].Attribute = EFI_MEMORY_WB;
+    }
+
+    if ( !acpi_disabled )
+    {
+        acpi_mem = get_acpi_meminfo();
+        acpi_mem_nr_banks = acpi_mem->nr_banks;
+        for( i = 0; i < acpi_mem_nr_banks; i++, offset++ )
+        {
+            memory_map[offset].Type = EfiACPIReclaimMemory;
+            memory_map[offset].PhysicalStart = acpi_mem->bank[i].start;
+            memory_map[offset].NumberOfPages = PFN_UP(acpi_mem->bank[i].size);
+            memory_map[offset].Attribute = EFI_MEMORY_WB;
+        }
+    }
+
+    memory_map[offset].Type = EfiACPIReclaimMemory;
+    memory_map[offset].PhysicalStart = paddr;
+    memory_map[offset].NumberOfPages = PFN_UP(size);
+    memory_map[offset].Attribute = EFI_MEMORY_WB;
+
+    tbl_add[TBL_MMAP].start = paddr + 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);
+}
diff --git a/xen/include/asm-arm/setup.h b/xen/include/asm-arm/setup.h
index e423b15..b2899f2 100644
--- a/xen/include/asm-arm/setup.h
+++ b/xen/include/asm-arm/setup.h
@@ -56,6 +56,11 @@ size_t estimate_efi_size(int mem_nr_banks);
 void acpi_create_efi_system_table(paddr_t paddr, void *efi_acpi_table,
                                   struct membank tbl_add[]);
 
+void acpi_create_efi_mmap_table(paddr_t paddr, paddr_t size,
+                                void *efi_acpi_table,
+                                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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