[PATCH v3 51/62] arm/acpi: Prepare EFI system table for Dom0
shannon.zhao at linaro.org
shannon.zhao at linaro.org
Tue Nov 17 01:40:50 PST 2015
From: Shannon Zhao <shannon.zhao at linaro.org>
Signed-off-by: Parth Dixit <parth.dixit at linaro.org>
Signed-off-by: Shannon Zhao <shannon.zhao at linaro.org>
---
xen/arch/arm/domain_build.c | 2 ++
xen/common/efi/boot.c | 64 +++++++++++++++++++++++++++++++++++++++++++++
xen/include/asm-arm/setup.h | 3 +++
3 files changed, 69 insertions(+)
diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index da4e271..9d667ea 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -1735,6 +1735,8 @@ static int prepare_acpi(struct domain *d, struct kernel_info *kinfo)
return rc;
acpi_map_rest_tables(d);
+ acpi_create_efi_system_table(d->arch.efi_acpi_gpa, d->arch.efi_acpi_table,
+ tbl_add);
return 0;
}
diff --git a/xen/common/efi/boot.c b/xen/common/efi/boot.c
index 6a48624..75835ae 100644
--- a/xen/common/efi/boot.c
+++ b/xen/common/efi/boot.c
@@ -1192,6 +1192,70 @@ int __init estimate_efi_size(int mem_nr_banks)
return size;
}
+
+static uint32_t __init xz_crc32(uint8_t *buf, size_t size, uint32_t crc)
+{
+ uint32_t xz_crc32_table[256];
+ const uint32_t poly = 0xEDB88320;
+ uint32_t i;
+ uint32_t j;
+ uint32_t r;
+
+ for (i = 0; i < 256; ++i) {
+ r = i;
+ for (j = 0; j < 8; ++j)
+ r = (r >> 1) ^ (poly & ~((r & 1) - 1));
+
+ xz_crc32_table[i] = r;
+ }
+
+ crc = ~crc;
+ while (size != 0) {
+ crc = xz_crc32_table[*buf++ ^ (crc & 0xFF)] ^ (crc >> 8);
+ --size;
+ }
+
+ return ~crc;
+}
+
+void __init acpi_create_efi_system_table(paddr_t paddr, void *efi_acpi_table,
+ struct membank tbl_add[])
+{
+ u64 table_addr, table_size, offset = 0;
+ u8 *base_ptr;
+ EFI_CONFIGURATION_TABLE *efi_conf_tbl;
+ EFI_SYSTEM_TABLE *efi_sys_tbl;
+ EFI_SYSTEM_TABLE *est = (EFI_SYSTEM_TABLE *)maddr_to_virt(efi.est);
+
+ table_addr = paddr + acpi_get_table_offset(tbl_add, TBL_EFIT);
+ table_size = sizeof(EFI_SYSTEM_TABLE) + sizeof(EFI_CONFIGURATION_TABLE)
+ + sizeof(XEN_EFI_FW_VENDOR);
+ base_ptr = efi_acpi_table + acpi_get_table_offset(tbl_add, TBL_EFIT);
+ efi_sys_tbl = (EFI_SYSTEM_TABLE *)base_ptr;
+
+ memcpy((EFI_TABLE_HEADER *)&(efi_sys_tbl->Hdr),
+ (EFI_TABLE_HEADER *)&(est->Hdr), sizeof(EFI_TABLE_HEADER));
+ efi_sys_tbl->Hdr.HeaderSize = table_size;
+
+ efi_sys_tbl->FirmwareRevision = est->FirmwareRevision;
+ efi_sys_tbl->NumberOfTableEntries = 1;
+ offset += sizeof(EFI_SYSTEM_TABLE);
+ memcpy((u16 *)(base_ptr + offset), XEN_EFI_FW_VENDOR,
+ sizeof(XEN_EFI_FW_VENDOR));
+ efi_sys_tbl->FirmwareVendor = (CHAR16 *)(table_addr + offset);
+
+ offset += sizeof(XEN_EFI_FW_VENDOR);
+ efi_conf_tbl = (EFI_CONFIGURATION_TABLE *)(base_ptr + offset);
+ efi_conf_tbl->VendorGuid = (EFI_GUID)ACPI_20_TABLE_GUID;
+ efi_conf_tbl->VendorTable = (VOID *)tbl_add[TBL_RSDP].start;
+ efi_sys_tbl->ConfigurationTable = (EFI_CONFIGURATION_TABLE *)(table_addr
+ + offset);
+ efi_sys_tbl->Hdr.CRC32 = xz_crc32((uint8_t *)efi_sys_tbl,
+ efi_sys_tbl->Hdr.HeaderSize, 0);
+
+ tbl_add[TBL_EFIT].start = table_addr;
+ tbl_add[TBL_EFIT].size = table_size;
+}
#endif
#ifndef CONFIG_ARM /* TODO - runtime service support */
diff --git a/xen/include/asm-arm/setup.h b/xen/include/asm-arm/setup.h
index b759813..2d65796 100644
--- a/xen/include/asm-arm/setup.h
+++ b/xen/include/asm-arm/setup.h
@@ -53,6 +53,9 @@ void copy_from_paddr(void *dst, paddr_t paddr, unsigned long len);
int estimate_efi_size(int mem_nr_banks);
+void acpi_create_efi_system_table(paddr_t paddr, void *efi_acpi_table,
+ struct membank tbl_add[]);
+
int construct_dom0(struct domain *d);
void discard_initial_modules(void);
--
2.1.0
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