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