Add submodule dependency filesHEADmaster

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec

1 files changed, 294 insertions, 0 deletions

diff --git a/roms/u-boot/arch/x86/cpu/efi/payload.c b/roms/u-boot/arch/x86/cpu/efi/payload.c
new file mode 100644
index 000000000..9a73b768e
--- /dev/null
+++ b/roms/u-boot/arch/x86/cpu/efi/payload.c
@@ -0,0 +1,294 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2015 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#include <common.h>
+#include <cpu_func.h>
+#include <efi.h>
+#include <errno.h>
+#include <init.h>
+#include <log.h>
+#include <usb.h>
+#include <asm/bootparam.h>
+#include <asm/e820.h>
+#include <asm/global_data.h>
+#include <asm/post.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * This function looks for the highest region of memory lower than 4GB which
+ * has enough space for U-Boot where U-Boot is aligned on a page boundary.
+ * It overrides the default implementation found elsewhere which simply
+ * picks the end of ram, wherever that may be. The location of the stack,
+ * the relocation address, and how far U-Boot is moved by relocation are
+ * set in the global data structure.
+ */
+ulong board_get_usable_ram_top(ulong total_size)
+{
+	struct efi_mem_desc *desc, *end;
+	struct efi_entry_memmap *map;
+	int ret, size;
+	uintptr_t dest_addr = 0;
+	struct efi_mem_desc *largest = NULL;
+
+	/*
+	 * Find largest area of memory below 4GB. We could
+	 * call efi_build_mem_table() for a more accurate picture since it
+	 * merges areas together where possible. But that function uses more
+	 * pre-relocation memory, and it's not critical that we find the
+	 * absolute largest region.
+	 */
+	ret = efi_info_get(EFIET_MEMORY_MAP, (void **)&map, &size);
+	if (ret) {
+		/* We should have stopped in dram_init(), something is wrong */
+		debug("%s: Missing memory map\n", __func__);
+		goto err;
+	}
+
+	end = (struct efi_mem_desc *)((ulong)map + size);
+	desc = map->desc;
+	for (; desc < end; desc = efi_get_next_mem_desc(map, desc)) {
+		if (desc->type != EFI_CONVENTIONAL_MEMORY ||
+		    desc->physical_start >= 1ULL << 32)
+			continue;
+		if (!largest || desc->num_pages > largest->num_pages)
+			largest = desc;
+	}
+
+	/* If no suitable area was found, return an error. */
+	assert(largest);
+	if (!largest || (largest->num_pages << EFI_PAGE_SHIFT) < (2 << 20))
+		goto err;
+
+	dest_addr = largest->physical_start + (largest->num_pages <<
+			EFI_PAGE_SHIFT);
+
+	return (ulong)dest_addr;
+err:
+	panic("No available memory found for relocation");
+	return 0;
+}
+
+int dram_init(void)
+{
+	struct efi_mem_desc *desc, *end;
+	struct efi_entry_memmap *map;
+	int size, ret;
+
+	ret = efi_info_get(EFIET_MEMORY_MAP, (void **)&map, &size);
+	if (ret) {
+		printf("Cannot find EFI memory map tables, ret=%d\n", ret);
+
+		return -ENODEV;
+	}
+
+	end = (struct efi_mem_desc *)((ulong)map + size);
+	gd->ram_size = 0;
+	desc = map->desc;
+	for (; desc < end; desc = efi_get_next_mem_desc(map, desc)) {
+		if (desc->type < EFI_MMAP_IO)
+			gd->ram_size += desc->num_pages << EFI_PAGE_SHIFT;
+	}
+
+	return 0;
+}
+
+int dram_init_banksize(void)
+{
+	struct efi_mem_desc *desc, *end;
+	struct efi_entry_memmap *map;
+	int ret, size;
+	int num_banks;
+
+	ret = efi_info_get(EFIET_MEMORY_MAP, (void **)&map, &size);
+	if (ret) {
+		/* We should have stopped in dram_init(), something is wrong */
+		debug("%s: Missing memory map\n", __func__);
+		return -ENXIO;
+	}
+	end = (struct efi_mem_desc *)((ulong)map + size);
+	desc = map->desc;
+	for (num_banks = 0;
+	     desc < end && num_banks < CONFIG_NR_DRAM_BANKS;
+	     desc = efi_get_next_mem_desc(map, desc)) {
+		/*
+		 * We only use conventional memory and ignore
+		 * anything less than 1MB.
+		 */
+		if (desc->type != EFI_CONVENTIONAL_MEMORY ||
+		    (desc->num_pages << EFI_PAGE_SHIFT) < 1 << 20)
+			continue;
+		gd->bd->bi_dram[num_banks].start = desc->physical_start;
+		gd->bd->bi_dram[num_banks].size = desc->num_pages <<
+			EFI_PAGE_SHIFT;
+		num_banks++;
+	}
+
+	return 0;
+}
+
+int arch_cpu_init(void)
+{
+	post_code(POST_CPU_INIT);
+
+	return x86_cpu_init_f();
+}
+
+int checkcpu(void)
+{
+	return 0;
+}
+
+int print_cpuinfo(void)
+{
+	return default_print_cpuinfo();
+}
+
+/* Find any available tables and copy them to a safe place */
+int reserve_arch(void)
+{
+	struct efi_info_hdr *hdr;
+
+	debug("table=%lx\n", gd->arch.table);
+	if (!gd->arch.table)
+		return 0;
+
+	hdr = (struct efi_info_hdr *)gd->arch.table;
+
+	gd->start_addr_sp -= hdr->total_size;
+	memcpy((void *)gd->start_addr_sp, hdr, hdr->total_size);
+	debug("Stashing EFI table at %lx to %lx, size %x\n",
+	      gd->arch.table, gd->start_addr_sp, hdr->total_size);
+	gd->arch.table = gd->start_addr_sp;
+
+	return 0;
+}
+
+int last_stage_init(void)
+{
+	/* start usb so that usb keyboard can be used as input device */
+	if (CONFIG_IS_ENABLED(USB_KEYBOARD))
+		usb_init();
+
+	return 0;
+}
+
+unsigned int install_e820_map(unsigned int max_entries,
+			      struct e820_entry *entries)
+{
+	struct efi_mem_desc *desc, *end;
+	struct efi_entry_memmap *map;
+	int size, ret;
+	efi_physical_addr_t last_end_addr = 0;
+	struct e820_entry *last_entry = NULL;
+	__u32 e820_type;
+	unsigned int num_entries = 0;
+
+	ret = efi_info_get(EFIET_MEMORY_MAP, (void **)&map, &size);
+	if (ret) {
+		printf("Cannot find EFI memory map tables, ret=%d\n", ret);
+
+		return -ENODEV;
+	}
+
+	end = (struct efi_mem_desc *)((ulong)map + size);
+	for (desc = map->desc; desc < end;
+	     desc = efi_get_next_mem_desc(map, desc)) {
+		if (desc->num_pages == 0)
+			continue;
+
+		switch (desc->type) {
+		case EFI_LOADER_CODE:
+		case EFI_LOADER_DATA:
+		case EFI_BOOT_SERVICES_CODE:
+		case EFI_BOOT_SERVICES_DATA:
+		case EFI_CONVENTIONAL_MEMORY:
+			e820_type = E820_RAM;
+			break;
+
+		case EFI_RESERVED_MEMORY_TYPE:
+		case EFI_RUNTIME_SERVICES_CODE:
+		case EFI_RUNTIME_SERVICES_DATA:
+		case EFI_MMAP_IO:
+		case EFI_MMAP_IO_PORT:
+		case EFI_PAL_CODE:
+			e820_type = E820_RESERVED;
+			break;
+
+		case EFI_ACPI_RECLAIM_MEMORY:
+			e820_type = E820_ACPI;
+			break;
+
+		case EFI_ACPI_MEMORY_NVS:
+			e820_type = E820_NVS;
+			break;
+
+		case EFI_UNUSABLE_MEMORY:
+			e820_type = E820_UNUSABLE;
+			break;
+
+		default:
+			printf("Invalid EFI memory descriptor type (0x%x)!\n",
+			       desc->type);
+			continue;
+		}
+
+		if (last_entry != NULL && last_entry->type == e820_type &&
+		    desc->physical_start == last_end_addr) {
+			last_entry->size += (desc->num_pages << EFI_PAGE_SHIFT);
+			last_end_addr += (desc->num_pages << EFI_PAGE_SHIFT);
+		} else {
+			if (num_entries >= E820MAX)
+				break;
+
+			entries[num_entries].addr = desc->physical_start;
+			entries[num_entries].size = desc->num_pages;
+			entries[num_entries].size <<= EFI_PAGE_SHIFT;
+			entries[num_entries].type = e820_type;
+			last_entry = &entries[num_entries];
+			last_end_addr = last_entry->addr + last_entry->size;
+			num_entries++;
+		}
+	}
+
+	return num_entries;
+}
+
+void setup_efi_info(struct efi_info *efi_info)
+{
+	struct efi_entry_systable *table;
+	struct efi_entry_memmap *map;
+	char *signature;
+	int size, ret;
+
+	memset(efi_info, 0, sizeof(struct efi_info));
+
+	ret = efi_info_get(EFIET_SYS_TABLE, (void **)&table, &size);
+	if (ret) {
+		printf("Cannot find EFI system table, ret=%d\n", ret);
+		return;
+	}
+	efi_info->efi_systab = (u32)(table->sys_table);
+
+	ret = efi_info_get(EFIET_MEMORY_MAP, (void **)&map, &size);
+	if (ret) {
+		printf("Cannot find EFI memory map tables, ret=%d\n", ret);
+		return;
+	}
+	efi_info->efi_memdesc_size = map->desc_size;
+	efi_info->efi_memdesc_version = map->version;
+	efi_info->efi_memmap = (u32)(map->desc);
+	efi_info->efi_memmap_size = size - sizeof(struct efi_entry_memmap);
+
+#ifdef CONFIG_EFI_STUB_64BIT
+	efi_info->efi_systab_hi = table->sys_table >> 32;
+	efi_info->efi_memmap_hi = (u64)(u32)(map->desc) >> 32;
+	signature = EFI64_LOADER_SIGNATURE;
+#else
+	signature = EFI32_LOADER_SIGNATURE;
+#endif
+	memcpy(&efi_info->efi_loader_signature, signature, 4);
+}