From af1a266670d040d2f4083ff309d732d648afba2a Mon Sep 17 00:00:00 2001
From: Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com>
Date: Tue, 10 Oct 2023 14:33:42 +0000
Subject: Add submodule dependency files
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
---
roms/u-boot/lib/efi/efi_app.c | 168 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 168 insertions(+)
create mode 100644 roms/u-boot/lib/efi/efi_app.c
(limited to 'roms/u-boot/lib/efi/efi_app.c')
diff --git a/roms/u-boot/lib/efi/efi_app.c b/roms/u-boot/lib/efi/efi_app.c
new file mode 100644
index 000000000..907bacd71
--- /dev/null
+++ b/roms/u-boot/lib/efi/efi_app.c
@@ -0,0 +1,168 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2015 Google, Inc
+ *
+ * EFI information obtained here:
+ * http://wiki.phoenix.com/wiki/index.php/EFI_BOOT_SERVICES
+ *
+ * This file implements U-Boot running as an EFI application.
+ */
+
+#include <common.h>
+#include <cpu_func.h>
+#include <debug_uart.h>
+#include <dm.h>
+#include <errno.h>
+#include <init.h>
+#include <malloc.h>
+#include <asm/global_data.h>
+#include <linux/err.h>
+#include <linux/types.h>
+#include <efi.h>
+#include <efi_api.h>
+#include <sysreset.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static struct efi_priv *global_priv;
+
+struct efi_system_table *efi_get_sys_table(void)
+{
+ return global_priv->sys_table;
+}
+
+unsigned long efi_get_ram_base(void)
+{
+ return global_priv->ram_base;
+}
+
+static efi_status_t setup_memory(struct efi_priv *priv)
+{
+ struct efi_boot_services *boot = priv->boot;
+ efi_physical_addr_t addr;
+ efi_status_t ret;
+ int pages;
+
+ /*
+ * Use global_data_ptr instead of gd since it is an assignment. There
+ * are very few assignments to global_data in U-Boot and this makes
+ * it easier to find them.
+ */
+ global_data_ptr = efi_malloc(priv, sizeof(struct global_data), &ret);
+ if (!global_data_ptr)
+ return ret;
+ memset(gd, '\0', sizeof(*gd));
+
+ gd->malloc_base = (ulong)efi_malloc(priv, CONFIG_VAL(SYS_MALLOC_F_LEN),
+ &ret);
+ if (!gd->malloc_base)
+ return ret;
+ pages = CONFIG_EFI_RAM_SIZE >> 12;
+
+ /*
+ * Don't allocate any memory above 4GB. U-Boot is a 32-bit application
+ * so we want it to load below 4GB.
+ */
+ addr = 1ULL << 32;
+ ret = boot->allocate_pages(EFI_ALLOCATE_MAX_ADDRESS,
+ priv->image_data_type, pages, &addr);
+ if (ret) {
+ printf("(using pool %lx) ", ret);
+ priv->ram_base = (ulong)efi_malloc(priv, CONFIG_EFI_RAM_SIZE,
+ &ret);
+ if (!priv->ram_base)
+ return ret;
+ priv->use_pool_for_malloc = true;
+ } else {
+ priv->ram_base = addr;
+ }
+ gd->ram_size = pages << 12;
+
+ return 0;
+}
+
+static void free_memory(struct efi_priv *priv)
+{
+ struct efi_boot_services *boot = priv->boot;
+
+ if (priv->use_pool_for_malloc)
+ efi_free(priv, (void *)priv->ram_base);
+ else
+ boot->free_pages(priv->ram_base, gd->ram_size >> 12);
+
+ efi_free(priv, (void *)gd->malloc_base);
+ efi_free(priv, gd);
+ global_data_ptr = NULL;
+}
+
+/**
+ * efi_main() - Start an EFI image
+ *
+ * This function is called by our EFI start-up code. It handles running
+ * U-Boot. If it returns, EFI will continue. Another way to get back to EFI
+ * is via reset_cpu().
+ */
+efi_status_t EFIAPI efi_main(efi_handle_t image,
+ struct efi_system_table *sys_table)
+{
+ struct efi_priv local_priv, *priv = &local_priv;
+ efi_status_t ret;
+
+ /* Set up access to EFI data structures */
+ efi_init(priv, "App", image, sys_table);
+
+ global_priv = priv;
+
+ /*
+ * Set up the EFI debug UART so that printf() works. This is
+ * implemented in the EFI serial driver, serial_efi.c. The application
+ * can use printf() freely.
+ */
+ debug_uart_init();
+
+ ret = setup_memory(priv);
+ if (ret) {
+ printf("Failed to set up memory: ret=%lx\n", ret);
+ return ret;
+ }
+
+ printf("starting\n");
+
+ board_init_f(GD_FLG_SKIP_RELOC);
+ board_init_r(NULL, 0);
+ free_memory(priv);
+
+ return EFI_SUCCESS;
+}
+
+static void efi_exit(void)
+{
+ struct efi_priv *priv = global_priv;
+
+ free_memory(priv);
+ printf("U-Boot EFI exiting\n");
+ priv->boot->exit(priv->parent_image, EFI_SUCCESS, 0, NULL);
+}
+
+static int efi_sysreset_request(struct udevice *dev, enum sysreset_t type)
+{
+ efi_exit();
+
+ return -EINPROGRESS;
+}
+
+static const struct udevice_id efi_sysreset_ids[] = {
+ { .compatible = "efi,reset" },
+ { }
+};
+
+static struct sysreset_ops efi_sysreset_ops = {
+ .request = efi_sysreset_request,
+};
+
+U_BOOT_DRIVER(efi_sysreset) = {
+ .name = "efi-sysreset",
+ .id = UCLASS_SYSRESET,
+ .of_match = efi_sysreset_ids,
+ .ops = &efi_sysreset_ops,
+};
--
cgit