vboot_common.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <console/cbmem_console.h>
#include <reset.h>
#include <security/vboot/misc.h>
#include <security/vboot/vboot_common.h>
#include <security/vboot/vbnv.h>
#include <vb2_api.h>
 
#include "antirollback.h"
 
void vboot_save_data(struct vb2_context *ctx)
{
        if (ctx->flags & VB2_CONTEXT_SECDATA_FIRMWARE_CHANGED &&
                        (CONFIG(VBOOT_MOCK_SECDATA) || tlcl_lib_init() == VB2_SUCCESS)) {
                printk(BIOS_INFO, "Saving secdata firmware\n");
                antirollback_write_space_firmware(ctx);
                ctx->flags &= ~VB2_CONTEXT_SECDATA_FIRMWARE_CHANGED;
        }
 
        if (ctx->flags & VB2_CONTEXT_SECDATA_KERNEL_CHANGED &&
                        (CONFIG(VBOOT_MOCK_SECDATA) || tlcl_lib_init() == VB2_SUCCESS)) {
                printk(BIOS_INFO, "Saving secdata kernel\n");
                antirollback_write_space_kernel(ctx);
                ctx->flags &= ~VB2_CONTEXT_SECDATA_KERNEL_CHANGED;
        }
 
        if (ctx->flags & VB2_CONTEXT_NVDATA_CHANGED) {
                printk(BIOS_INFO, "Saving nvdata\n");
                save_vbnv(ctx->nvdata);
                ctx->flags &= ~VB2_CONTEXT_NVDATA_CHANGED;
        }
}
 
/* Check if it is okay to enable USB Device Controller (UDC). */
int vboot_can_enable_udc(void)
{
        /* Allow UDC in all vboot modes. */
        if (!CONFIG(CHROMEOS) && CONFIG(VBOOT_ALWAYS_ALLOW_UDC))
                return 1;
 
        /* Always disable if not in developer mode */
        if (!vboot_developer_mode_enabled())
                return 0;
        /* Enable if GBB flag is set */
        if (vboot_is_gbb_flag_set(VB2_GBB_FLAG_ENABLE_UDC))
                return 1;
        /* Enable if VBNV flag is set */
        if (vbnv_udc_enable_flag())
                return 1;
        /* Otherwise disable */
        return 0;
}
 
/* ============================ VBOOT REBOOT ============================== */
void __weak vboot_platform_prepare_reboot(void)
{
}
 
void vboot_reboot(void)
{
        if (CONFIG(CONSOLE_CBMEM_DUMP_TO_UART))
                cbmem_dump_console_to_uart();
        vboot_platform_prepare_reboot();
        board_reset();
}