[PATCH v2 14/28] efi_loader: Install ACPI tables

[Patrick Rudolph]

Install ACPI tables inside the efi_loader similar to SMBIOS tables.
When ACPI is enabled and wasn't installed in other places, install
the ACPI table in EFI. Since EFI is necessary to pass the ACPI
table location when FDT isn't used, there's no need to install it
separately.

When CONFIG_BLOBLIST_TABLES is set the tables will be stored in a
bloblist.

TEST: Booted QEMU SBSA using EFI and ACPI only.

Signed-off-by: Patrick Rudolph <patrick.rudolph at 9elements.com>
Cc: Simon Glass <sjg at chromium.org>
Cc: Tom Rini <trini at konsulko.com>
---
 lib/efi_loader/efi_acpi.c        | 57 ++++++++++++++++++++++++++++++--
 test/py/tests/test_event_dump.py |  1 +
 2 files changed, 56 insertions(+), 2 deletions(-)

diff --git a/lib/efi_loader/efi_acpi.c b/lib/efi_loader/efi_acpi.c
index 67bd7f8ca2..9262f21ea6 100644
--- a/lib/efi_loader/efi_acpi.c
+++ b/lib/efi_loader/efi_acpi.c
@@ -6,15 +6,23 @@
  */
 
 #include <efi_loader.h>
-#include <log.h>
-#include <mapmem.h>
 #include <acpi/acpi_table.h>
 #include <asm/global_data.h>
+#include <asm/io.h>
+#include <bloblist.h>
+#include <linux/sizes.h>
+#include <linux/log2.h>
+#include <log.h>
+#include <malloc.h>
+#include <mapmem.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
 static const efi_guid_t acpi_guid = EFI_ACPI_TABLE_GUID;
 
+enum {
+	TABLE_SIZE	= SZ_64K,
+};
 /*
  * Install the ACPI table as a configuration table.
  *
@@ -47,3 +55,48 @@ efi_status_t efi_acpi_register(void)
 	return efi_install_configuration_table(&acpi_guid,
 					       (void *)(ulong)addr);
 }
+
+static int install_acpi_table(void)
+{
+	u64 rom_addr, rom_table_end;
+	void *addr;
+
+	if (!IS_ENABLED(CONFIG_GENERATE_ACPI_TABLE) ||
+	    IS_ENABLED(CONFIG_X86) ||
+	    IS_ENABLED(CONFIG_QFW_ACPI))
+		return 0;
+
+	/* Align the table to a 4KB boundary to keep EFI happy */
+	if (IS_ENABLED(CONFIG_BLOBLIST_TABLES))
+		addr = bloblist_add(BLOBLISTT_ACPI_TABLES, TABLE_SIZE,
+				    ilog2(SZ_4K));
+	else
+		addr = memalign(SZ_4K, TABLE_SIZE);
+
+	if (!addr)
+		return log_msg_ret("mem", -ENOBUFS);
+
+	rom_addr = virt_to_phys(addr);
+
+	gd->arch.table_start_high = rom_addr;
+
+	rom_table_end = write_acpi_tables(rom_addr);
+	if (!rom_table_end) {
+		log_err("Can't create ACPI configuration table\n");
+		return -EINTR;
+	}
+
+	debug("- wrote 'acpi' to %llx, end %llx\n", rom_addr, rom_table_end);
+	if (rom_table_end - rom_addr > TABLE_SIZE) {
+		log_err("Out of space for configuration tables: need %llx, have %x\n",
+			rom_table_end - rom_addr, TABLE_SIZE);
+		return log_msg_ret("acpi", -ENOSPC);
+	}
+	gd->arch.table_end_high = rom_table_end;
+
+	debug("- done writing tables\n");
+
+	return 0;
+}
+
+EVENT_SPY_SIMPLE(EVT_LAST_STAGE_INIT, install_acpi_table);
diff --git a/test/py/tests/test_event_dump.py b/test/py/tests/test_event_dump.py
index e282c67335..88bbf34f71 100644
--- a/test/py/tests/test_event_dump.py
+++ b/test/py/tests/test_event_dump.py
@@ -18,6 +18,7 @@ def test_event_dump(u_boot_console):
 --------------------  ------------------------------  ------------------------------
 EVT_FT_FIXUP          bootmeth_vbe_ft_fixup           .*boot/vbe_request.c:.*
 EVT_FT_FIXUP          bootmeth_vbe_simple_ft_fixup    .*boot/vbe_simple_os.c:.*
+EVT_LAST_STAGE_INIT   install_acpi_table              .*lib/efi_loader/efi_acpi.c:.*
 EVT_LAST_STAGE_INIT   install_smbios_table            .*lib/efi_loader/efi_smbios.c:.*
 EVT_MISC_INIT_F       sandbox_early_getopt_check      .*arch/sandbox/cpu/start.c:.*
 EVT_TEST              h_adder_simple                  .*test/common/event.c:'''
-- 
2.45.2