mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
99 lines
2.3 KiB
C
99 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2015 Google, Inc
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*
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* EFI information obtained here:
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* http://wiki.phoenix.com/wiki/index.php/EFI_BOOT_SERVICES
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*
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* Common EFI functions
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*/
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#include <common.h>
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#include <debug_uart.h>
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#include <errno.h>
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#include <linux/err.h>
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#include <linux/types.h>
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#include <efi.h>
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#include <efi_api.h>
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/*
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* Unfortunately we cannot access any code outside what is built especially
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* for the stub. lib/string.c is already being built for the U-Boot payload
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* so it uses the wrong compiler flags. Add our own memset() here.
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*/
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static void efi_memset(void *ptr, int ch, int size)
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{
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char *dest = ptr;
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while (size-- > 0)
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*dest++ = ch;
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}
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/*
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* Since the EFI stub cannot access most of the U-Boot code, add our own
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* simple console output functions here. The EFI app will not use these since
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* it can use the normal console.
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*/
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void efi_putc(struct efi_priv *priv, const char ch)
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{
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struct efi_simple_text_output_protocol *con = priv->sys_table->con_out;
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uint16_t ucode[2];
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ucode[0] = ch;
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ucode[1] = '\0';
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con->output_string(con, ucode);
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}
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void efi_puts(struct efi_priv *priv, const char *str)
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{
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while (*str)
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efi_putc(priv, *str++);
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}
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int efi_init(struct efi_priv *priv, const char *banner, efi_handle_t image,
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struct efi_system_table *sys_table)
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{
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efi_guid_t loaded_image_guid = LOADED_IMAGE_PROTOCOL_GUID;
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struct efi_boot_services *boot = sys_table->boottime;
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struct efi_loaded_image *loaded_image;
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int ret;
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efi_memset(priv, '\0', sizeof(*priv));
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priv->sys_table = sys_table;
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priv->boot = sys_table->boottime;
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priv->parent_image = image;
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priv->run = sys_table->runtime;
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efi_puts(priv, "U-Boot EFI ");
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efi_puts(priv, banner);
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efi_putc(priv, ' ');
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ret = boot->open_protocol(priv->parent_image, &loaded_image_guid,
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(void **)&loaded_image, &priv->parent_image,
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NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);
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if (ret) {
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efi_puts(priv, "Failed to get loaded image protocol\n");
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return ret;
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}
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priv->image_data_type = loaded_image->image_data_type;
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return 0;
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}
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void *efi_malloc(struct efi_priv *priv, int size, efi_status_t *retp)
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{
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struct efi_boot_services *boot = priv->boot;
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void *buf = NULL;
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*retp = boot->allocate_pool(priv->image_data_type, size, &buf);
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return buf;
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}
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void efi_free(struct efi_priv *priv, void *ptr)
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{
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struct efi_boot_services *boot = priv->boot;
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boot->free_pool(ptr);
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}
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