bootblock.c File Reference

#include <bootblock_common.h>
#include <soc/soc.h>
#include <soc/spi.h>
#include <soc/uart.h>
#include <soc/gpio.h>
#include <spi_flash.h>
#include <console/console.h>
#include <fmap.h>
#include "mainboard.h"

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Functions
void	bootblock_mainboard_early_init (void)
static void	configure_spi_flash (void)
static void	protect_ro_rgn_spi_flash (void)
	Handle flash write protection. More...
void	bootblock_mainboard_init (void)

Function Documentation

bootblock_mainboard_early_init()

void bootblock_mainboard_early_init

(

void

)

Definition at line 13 of file bootblock.c.

References CONFIG, ELGON_GPIO_ERROR_LED, ELGON_GPIO_UART_SEL, gpio_output(), uart_is_enabled(), and uart_setup().

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bootblock_mainboard_init()

void bootblock_mainboard_init

(

void

)

Definition at line 82 of file bootblock.c.

References configure_spi_flash(), and protect_ro_rgn_spi_flash().

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configure_spi_flash()

static void configure_spi_flash ( void  )

static

Definition at line 27 of file bootblock.c.

References ELGON_GPIO_SPI_MUX, gpio_output(), and spi_init_custom().

Referenced by bootblock_mainboard_init().

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protect_ro_rgn_spi_flash()

static void protect_ro_rgn_spi_flash ( void  )

static

Handle flash write protection.

This code verifies the write-protection on each boot. Enabling the write protection does only run on the first boot. An error is fatal as it breaks the Chain Of Trust.

Definition at line 48 of file bootblock.c.

References BIOS_ERR, BIOS_INFO, BIOS_WARNING, boot_device_spi_flash(), die(), fmap_locate_area(), printk, spi_flash_is_write_protected(), spi_flash_set_write_protected(), spi_flash_status(), and SPI_WRITE_PROTECTION_PIN.

Referenced by bootblock_mainboard_init().

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