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/* Copyright 2016 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef __EC_CHIP_G_FLASH_CONFIG_H
#define __EC_CHIP_G_FLASH_CONFIG_H
#include "stdint.h"
#define FLASH_INFO_SIZE (2 * 1024)
#define FLASH_INFO_MEMORY_BASE 0x28000
/* INFO is a 2-KB flash page that consists of four regions. The
* first two regions are used by the boot-room and boot-loader
* respectively. Manufacture related state is written to the fourth
* region. */
#define FLASH_INFO_MANUFACTURE_STATE_OFFSET 0x600
#define FLASH_INFO_MANUFACTURE_STATE_SIZE 0x200
#define FLASH_REGION_EN_ALL (BIT(GC_GLOBALSEC_FLASH_REGION0_CTRL_EN_LSB) |\
BIT(GC_GLOBALSEC_FLASH_REGION0_CTRL_RD_EN_LSB) |\
BIT(GC_GLOBALSEC_FLASH_REGION0_CTRL_WR_EN_LSB))
/*
* The below structure describes a single flash region (the hardware supports
* up to eight). The reg_size field is the actual region size, The reg_perms
* bits are as used in the above macro, allowing to enable the region and its
* read and write accesses separately.
*/
struct g_flash_region {
uint32_t reg_base;
uint32_t reg_size;
uint32_t reg_perms;
};
/*
* This function is provided by the board layer to describe necessary flash
* regions' configuration to allow the flash driver to set the regions
* properly.
*
* The function is passed an array of the g_flash_region structures of the
* max_regions size, it fills as many entries as necessary and returns the
* number of set up entries.
*/
int flash_regions_to_enable(struct g_flash_region *regions,
int max_regions);
#endif /* ! __EC_CHIP_G_FLASH_CONFIG_H */
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