mirror of
https://github.com/espressif/openthread.git
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[cc2538] implement otPlatFlash APIs (#4552)
This commit is contained in:
Jonathan Hui
@@ -26,168 +26,76 @@
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <openthread-core-config.h>
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#include <openthread/config.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <openthread/platform/alarm-milli.h>
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#include <assert.h>
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#include <stdint.h>
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#include <string.h>
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#include "platform-cc2538.h"
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#include "rom-utility.h"
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#include "utils/code_utils.h"
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#include "utils/flash.h"
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#define FLASH_CTRL_FCTL_BUSY 0x00000080
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#if SETTINGS_CONFIG_PAGE_SIZE != 2048
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#error FLASH page size is 2048 on this chip
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#endif
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#if SETTINGS_CONFIG_PAGE_NUM != 2
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#error Linker script reserves 2 pages for settings.
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#endif
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#define FLASH_PAGE_SIZE 2048
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#define FLASH_PAGE_NUM 2
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#define FLASH_SWAP_SIZE (FLASH_PAGE_SIZE * (FLASH_PAGE_NUM / 2))
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/* The linker script creates this external symbol */
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extern uint8_t _FLASH_settings_pageA[];
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/* Convert a settings offset to the physical address within the flash settings pages */
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static uint32_t flashPhysAddr(uint32_t settings_offset)
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static uint32_t flashPhysAddr(uint8_t aSwapIndex, uint32_t aOffset)
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{
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uint32_t base;
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uint32_t address = (uint32_t)(&_FLASH_settings_pageA[0]) + aOffset;
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base = (uint32_t)(&_FLASH_settings_pageA[0]);
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base = base + settings_offset;
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return base;
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}
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static otError romStatusToThread(int32_t aStatus)
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{
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otError error = OT_ERROR_NONE;
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switch (aStatus)
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if (aSwapIndex)
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{
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case 0:
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error = OT_ERROR_NONE;
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break;
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case -1:
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error = OT_ERROR_FAILED;
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break;
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case -2:
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error = OT_ERROR_INVALID_ARGS;
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break;
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default:
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error = OT_ERROR_ABORT;
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address += FLASH_SWAP_SIZE;
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}
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return error;
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return address;
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}
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otError utilsFlashInit(void)
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void otPlatFlashInit(otInstance *aInstance)
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{
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return OT_ERROR_NONE;
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OT_UNUSED_VARIABLE(aInstance);
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}
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uint32_t utilsFlashGetSize(void)
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uint32_t otPlatFlashGetSwapSize(otInstance *aInstance)
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{
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return (SETTINGS_CONFIG_PAGE_SIZE * SETTINGS_CONFIG_PAGE_NUM);
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OT_UNUSED_VARIABLE(aInstance);
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return FLASH_SWAP_SIZE;
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}
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otError utilsFlashErasePage(uint32_t aAddress)
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void otPlatFlashErase(otInstance *aInstance, uint8_t aSwapIndex)
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{
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otError error = OT_ERROR_NONE;
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int32_t status;
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uint32_t address;
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OT_UNUSED_VARIABLE(aInstance);
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otEXPECT_ACTION(aAddress < utilsFlashGetSize(), error = OT_ERROR_INVALID_ARGS);
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address = aAddress - (aAddress & (SETTINGS_CONFIG_PAGE_SIZE - 1));
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address = flashPhysAddr(address);
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status = ROM_PageErase(address, SETTINGS_CONFIG_PAGE_SIZE);
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error = romStatusToThread(status);
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exit:
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return error;
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}
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otError utilsFlashStatusWait(uint32_t aTimeout)
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{
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otError error = OT_ERROR_NONE;
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uint32_t start = otPlatAlarmMilliGetNow();
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uint32_t busy = 1;
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while (busy && ((otPlatAlarmMilliGetNow() - start) < aTimeout))
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ROM_PageErase(flashPhysAddr(aSwapIndex, 0), FLASH_PAGE_SIZE);
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while (HWREG(FLASH_CTRL_FCTL) & FLASH_CTRL_FCTL_BUSY)
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{
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busy = HWREG(FLASH_CTRL_FCTL) & FLASH_CTRL_FCTL_BUSY;
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}
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otEXPECT_ACTION(!busy, error = OT_ERROR_BUSY);
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exit:
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return error;
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}
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uint32_t utilsFlashWrite(uint32_t aAddress, uint8_t *aData, uint32_t aSize)
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void otPlatFlashWrite(otInstance *aInstance, uint8_t aSwapIndex, uint32_t aOffset, const void *aData, uint32_t aSize)
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{
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int32_t status;
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uint32_t busy = 1;
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uint32_t *data;
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uint32_t size = 0;
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OT_UNUSED_VARIABLE(aInstance);
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otEXPECT_ACTION(((aAddress + aSize) < utilsFlashGetSize()) && (!(aAddress & 3)) && (!(aSize & 3)), aSize = 0);
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uint32_t *data = (uint32_t *)(aData);
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data = (uint32_t *)(aData);
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while (size < aSize)
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for (uint32_t size = 0; size < aSize; size += sizeof(uint32_t), aOffset += sizeof(uint32_t), data++)
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{
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status = ROM_ProgramFlash(data, flashPhysAddr(aAddress), 4);
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ROM_ProgramFlash(data, flashPhysAddr(aSwapIndex, aOffset), sizeof(uint32_t));
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while (busy)
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while (HWREG(FLASH_CTRL_FCTL) & FLASH_CTRL_FCTL_BUSY)
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{
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busy = HWREG(FLASH_CTRL_FCTL) & FLASH_CTRL_FCTL_BUSY;
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}
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otEXPECT(romStatusToThread(status) == OT_ERROR_NONE);
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size += 4;
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data++;
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aAddress += 4;
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}
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exit:
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return size;
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}
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uint32_t utilsFlashRead(uint32_t aAddress, uint8_t *aData, uint32_t aSize)
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void otPlatFlashRead(otInstance *aInstance, uint8_t aSwapIndex, uint32_t aOffset, uint8_t *aData, uint32_t aSize)
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{
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uint32_t size = 0;
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OT_UNUSED_VARIABLE(aInstance);
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otEXPECT((aAddress + aSize) < utilsFlashGetSize());
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while (size < aSize)
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{
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uint8_t *byte = (uint8_t *)flashPhysAddr(aAddress);
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uint8_t maxIndex = 4;
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if (size == (aSize - aSize % 4))
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{
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maxIndex = aSize % 4;
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}
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for (uint8_t index = 0; index < maxIndex; index++, byte++, aData++)
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{
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*aData = *byte;
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}
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size += maxIndex;
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aAddress += maxIndex;
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}
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exit:
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return size;
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memcpy(aData, (void *)flashPhysAddr(aSwapIndex, aOffset), aSize);
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}
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@@ -74,32 +74,6 @@
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*/
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#define OPENTHREAD_CONFIG_SOFTWARE_ENERGY_SCAN_ENABLE 1
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/**
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* @def SETTINGS_CONFIG_BASE_ADDRESS
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*
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* The actual physical address used for the cc2538 is set by the
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* linker file, the value here is "relative to the base address" set
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* in the linker file.
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*
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*/
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#define SETTINGS_CONFIG_BASE_ADDRESS 0
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/**
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* @def SETTINGS_CONFIG_PAGE_NUM
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*
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* The CC2538 linker script sets aside 2 pages.
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*
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*/
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#define SETTINGS_CONFIG_PAGE_NUM 2
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/**
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* @def SETTINGS_CONFIG_PAGE_SIZE
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*
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* The page size of settings, 2K bytes
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*
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*/
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#define SETTINGS_CONFIG_PAGE_SIZE 2048
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/**
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* @def OPENTHREAD_CONFIG_NCP_UART_ENABLE
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*
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@@ -260,4 +234,14 @@
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#define OPENTHREAD_CONFIG_CC2592_HGM_DEFAULT_STATE true
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#endif
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/**
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* @def OPENTHREAD_CONFIG_PLATFORM_FLASH_API_ENABLE
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*
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* Define to 1 to enable otPlatFlash* APIs to support non-volatile storage.
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*
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* When defined to 1, the platform MUST implement the otPlatFlash* APIs instead of the otPlatSettings* APIs.
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*
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*/
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#define OPENTHREAD_CONFIG_PLATFORM_FLASH_API_ENABLE 1
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#endif // OPENTHREAD_CORE_CC2538_CONFIG_H_
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