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/**************************************************************************//**
*
* @copyright (C) 2020 Nuvoton Technology Corp. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-02-17 FYChou First version
*
******************************************************************************/
#include <rtconfig.h>
#if defined(BSP_USING_FMC)
#include <rtdevice.h>
#include "NuMicro.h"
#if defined(RT_USING_FAL)
#include <fal.h>
#endif
/* Private define ---------------------------------------------------------------*/
#define FMC_APROM_END (FMC_APROM_BASE + 0x80000)
#define FMC_LDROM_END (FMC_LDROM_BASE + 0x2000)
#define NU_GETBYTE_OFST(addr) (((addr)&0x3)*8)
#define NU_GET_WALIGN(addr) ((addr)&~0x3)
#define NU_GET_LSB2BIT(addr) ((addr)&0x3)
/* Private typedef --------------------------------------------------------------*/
/* Private functions ------------------------------------------------------------*/
static int nu_fmc_init(void);
#if defined(RT_USING_FAL)
static int aprom_read(long offset, uint8_t *buf, size_t size);
static int aprom_write(long offset, const uint8_t *buf, size_t size);
static int aprom_erase(long offset, size_t size);
static int ldrom_read(long offset, uint8_t *buf, size_t size);
static int ldrom_write(long offset, const uint8_t *buf, size_t size);
static int ldrom_erase(long offset, size_t size);
#endif /* RT_USING_FAL */
/* Public functions -------------------------------------------------------------*/
int nu_fmc_read(long offset, uint8_t *buf, size_t size);
int nu_fmc_write(long offset, const uint8_t *buf, size_t size);
int nu_fmc_erase(long offset, size_t size);
/* Private variables ------------------------------------------------------------*/
static rt_mutex_t g_mutex_fmc = RT_NULL;
/* Public variables -------------------------------------------------------------*/
#if defined(RT_USING_FAL)
const struct fal_flash_dev Onchip_aprom_flash = { "OnChip_APROM", FMC_APROM_BASE, FMC_APROM_END, FMC_FLASH_PAGE_SIZE, {NULL, aprom_read, aprom_write, aprom_erase} };
const struct fal_flash_dev Onchip_ldrom_flash = { "OnChip_LDROM", FMC_LDROM_BASE, FMC_LDROM_END, FMC_FLASH_PAGE_SIZE, {NULL, ldrom_read, ldrom_write, ldrom_erase} };
#endif /* RT_USING_FAL */
int nu_fmc_read(long addr, uint8_t *buf, size_t size)
{
size_t read_size = 0;
uint32_t addr_end = addr + size;
uint32_t isp_rdata = 0;
rt_mutex_take(g_mutex_fmc, RT_WAITING_FOREVER);
SYS_UnlockReg();
if (NU_GET_LSB2BIT(addr))
isp_rdata = FMC_Read(NU_GET_WALIGN(addr));
for (; addr < addr_end ;)
{
if (NU_GET_LSB2BIT(addr) == 0)
{
isp_rdata = FMC_Read(addr);
if (addr_end - addr >= 4)
{
*(uint32_t *)buf = isp_rdata;
addr += 4;
buf += 4;
read_size += 4;
continue;
}
}
*buf = isp_rdata >> NU_GETBYTE_OFST(addr);
addr++;
buf++;
read_size++;
}
SYS_LockReg();
rt_mutex_release(g_mutex_fmc);
return read_size;
}
int nu_fmc_write(long addr, const uint8_t *buf, size_t size)
{
size_t write_size = 0;
uint32_t addr_end = addr + size;
uint32_t isp_rdata = 0;
rt_mutex_take(g_mutex_fmc, RT_WAITING_FOREVER);
SYS_UnlockReg();
if (addr < FMC_APROM_END)
FMC_ENABLE_AP_UPDATE();
else if ((addr < FMC_LDROM_END) && addr >= FMC_LDROM_BASE)
FMC_ENABLE_LD_UPDATE();
else
{
goto Exit2;
}
if (NU_GET_LSB2BIT(addr))
isp_rdata = FMC_Read(NU_GET_WALIGN(addr));
for (; addr < addr_end ;)
{
if (addr_end - addr >= 4 && NU_GET_LSB2BIT(addr) == 0)
{
FMC_Write(addr, *((uint32_t *)buf));
addr += 4;
buf += 4;
write_size += 4;
continue;
}
if ((NU_GET_LSB2BIT(addr)) == 0x0)
isp_rdata = FMC_Read(NU_GET_WALIGN(addr));
isp_rdata = (isp_rdata & ~(0xFF << NU_GETBYTE_OFST(addr))) | ((*buf) << NU_GETBYTE_OFST(addr));
if ((NU_GET_LSB2BIT(addr)) == 0x3)
FMC_Write(NU_GET_WALIGN(addr), isp_rdata);
addr++;
buf++;
write_size++;
}
if (NU_GET_LSB2BIT(addr))
FMC_Write(NU_GET_WALIGN(addr), isp_rdata);
FMC_DISABLE_AP_UPDATE();
FMC_DISABLE_LD_UPDATE();
Exit2:
SYS_LockReg();
rt_mutex_release(g_mutex_fmc);
return write_size;
}
int nu_fmc_erase(long addr, size_t size)
{
size_t erased_size = 0;
uint32_t addrptr;
uint32_t addr_end = addr + size;
#if defined(NU_SUPPORT_NONALIGN)
uint8_t *page_sdtemp = RT_NULL;
uint8_t *page_edtemp = RT_NULL;
addrptr = addr & (FMC_FLASH_PAGE_SIZE - 1);
if (addrptr)
{
page_sdtemp = rt_malloc(addrptr);
if (page_sdtemp == RT_NULL)
{
erased_size = 0;
goto Exit3;
}
if (nu_fmc_read(addr & ~(FMC_FLASH_PAGE_SIZE - 1), page_sdtemp, addrptr) != addrptr)
{
erased_size = 0;
goto Exit3;
}
}
addrptr = addr_end & (FMC_FLASH_PAGE_SIZE - 1);
if (addrptr)
{
page_edtemp = rt_malloc(FMC_FLASH_PAGE_SIZE - addrptr);
if (page_edtemp == RT_NULL)
{
erased_size = 0;
goto Exit3;
}
if (nu_fmc_read(addr_end, page_edtemp, FMC_FLASH_PAGE_SIZE - addrptr) != FMC_FLASH_PAGE_SIZE - addrptr)
{
erased_size = 0;
goto Exit3;
}
}
#endif
rt_mutex_take(g_mutex_fmc, RT_WAITING_FOREVER);
SYS_UnlockReg();
if (addr <= FMC_APROM_END)
FMC_ENABLE_AP_UPDATE();
else if ((addr < FMC_LDROM_END) && addr >= FMC_LDROM_BASE)
FMC_ENABLE_LD_UPDATE();
else
{
goto Exit2;
}
addrptr = (addr & ~(FMC_FLASH_PAGE_SIZE - 1));
while (addrptr < addr_end)
{
if (FMC_Erase(addrptr) != RT_EOK)
{
goto Exit1;
}
erased_size += FMC_FLASH_PAGE_SIZE;
addrptr += FMC_FLASH_PAGE_SIZE;
}
Exit1:
FMC_DISABLE_AP_UPDATE();
FMC_DISABLE_LD_UPDATE();
Exit2:
SYS_LockReg();
rt_mutex_release(g_mutex_fmc);
#if defined(NU_SUPPORT_NONALIGN)
if (erased_size >= size)
{
addrptr = addr & (FMC_FLASH_PAGE_SIZE - 1);
if (addrptr)
{
if (nu_fmc_write(addr & ~(FMC_FLASH_PAGE_SIZE - 1), page_sdtemp, addrptr) != addrptr)
goto Exit3;
erased_size += addrptr;
}
addrptr = addr_end & (FMC_FLASH_PAGE_SIZE - 1);
if (addrptr)
{
if (nu_fmc_write(addr_end, page_edtemp, FMC_FLASH_PAGE_SIZE - addrptr) != FMC_FLASH_PAGE_SIZE - addrptr)
goto Exit3;
erased_size += FMC_FLASH_PAGE_SIZE - addrptr;
}
}
else
erased_size = 0;
Exit3:
if (page_sdtemp != RT_NULL)
rt_free(page_sdtemp);
if (page_edtemp != RT_NULL)
rt_free(page_edtemp);
#endif
return erased_size;
}
#if defined(RT_USING_FAL)
static int aprom_read(long offset, uint8_t *buf, size_t size)
{
return nu_fmc_read(Onchip_aprom_flash.addr + offset, buf, size);
}
static int aprom_write(long offset, const uint8_t *buf, size_t size)
{
return nu_fmc_write(Onchip_aprom_flash.addr + offset, buf, size);
}
static int aprom_erase(long offset, size_t size)
{
return nu_fmc_erase(Onchip_aprom_flash.addr + offset, size);
}
static int ldrom_read(long offset, uint8_t *buf, size_t size)
{
return nu_fmc_read(Onchip_ldrom_flash.addr + offset, buf, size);
}
static int ldrom_write(long offset, const uint8_t *buf, size_t size)
{
return nu_fmc_write(Onchip_ldrom_flash.addr + offset, buf, size);
}
static int ldrom_erase(long offset, size_t size)
{
return nu_fmc_erase(Onchip_ldrom_flash.addr + offset, size);
}
#endif /* RT_USING_FAL */
static int nu_fmc_init(void)
{
SYS_UnlockReg();
FMC_ENABLE_ISP();
SYS_LockReg();
g_mutex_fmc = rt_mutex_create("nu_fmc_lock", RT_IPC_FLAG_PRIO);
RT_ASSERT(g_mutex_fmc != RT_NULL);
/* RT_USING_FAL */
#if defined(RT_USING_FAL)
fal_init();
#endif
return (int)RT_EOK;
}
INIT_APP_EXPORT(nu_fmc_init);
#endif /* BSP_USING_FMC */
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