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/* Copyright 2015 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* Memory mapping */
/*
* Flash physical size: 256KB
* Write protect sectors: 31 4KB sectors, one 132KB sector
*/
#define CONFIG_FLASH_SIZE_BYTES 0x00040000
#define CONFIG_FLASH_BANK_SIZE 0x1000
#define CONFIG_FLASH_ERASE_SIZE 0x0800 /* erase bank size */
#define CONFIG_FLASH_WRITE_SIZE 0x0002 /* minimum write size */
/* No page mode on STM32F, so no benefit to larger write sizes */
#define CONFIG_FLASH_WRITE_IDEAL_SIZE 0x0002
#define CONFIG_RAM_BASE 0x20000000
#define CONFIG_RAM_SIZE 0x00008000
/* Number of IRQ vectors on the NVIC */
#define CONFIG_IRQ_COUNT 32
/*
* STM32F09x flash layout:
* - RO image starts at the beginning of flash: sector 0 ~ 29
* - PSTATE immediately follows the RO image: sector 30
* - RW image starts at 0x1f00: sector 31
* - Protected region consists of the RO image + PSTATE: sector 0 ~ 30
* - Unprotected region consists of second half of RW image
*
* PSTATE(4KB)
* |
* (124KB) v (132KB)
* |<-----Protected Region------>|<------Unprotected Region----->|
* |<--------RO image--------->| |<----------RW image----------->|
* 0 (120KB) ^ ^
* | |
* | 31(132KB sector)
* |
* 30
*
*/
#define _SECTOR_4KB (4 * 1024)
#define _SECTOR_132KB (132 * 1024)
/* The EC uses one sector to emulate persistent state */
#define CONFIG_FLASH_PSTATE
#define CONFIG_FW_PSTATE_SIZE _SECTOR_4KB
#define CONFIG_FW_PSTATE_OFF (30 * _SECTOR_4KB)
#define CONFIG_RO_MEM_OFF 0
#define CONFIG_RO_STORAGE_OFF 0
#define CONFIG_RO_SIZE (30 * _SECTOR_4KB)
#define CONFIG_RW_MEM_OFF \
(CONFIG_RO_MEM_OFF + CONFIG_RO_SIZE + CONFIG_FW_PSTATE_SIZE)
#define CONFIG_RW_STORAGE_OFF 0
#define CONFIG_RW_SIZE _SECTOR_132KB
#define CONFIG_EC_PROTECTED_STORAGE_OFF 0
#define CONFIG_EC_PROTECTED_STORAGE_SIZE CONFIG_RW_MEM_OFF
#define CONFIG_EC_WRITABLE_STORAGE_OFF CONFIG_RW_MEM_OFF
#define CONFIG_EC_WRITABLE_STORAGE_SIZE \
(CONFIG_FLASH_SIZE_BYTES - CONFIG_EC_WRITABLE_STORAGE_OFF)
#define CONFIG_WP_STORAGE_OFF CONFIG_EC_PROTECTED_STORAGE_OFF
#define CONFIG_WP_STORAGE_SIZE CONFIG_EC_PROTECTED_STORAGE_SIZE
/* We map each write protect sector to a bank */
#define PHYSICAL_BANKS 32
#define WP_BANK_COUNT 31
#define PSTATE_BANK 30
#define PSTATE_BANK_COUNT 1
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