mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-28 15:41:40 +00:00
234a60244c
Use MISC u-class to export the NVM register (starting at 0xF8 offset) and avoid specific API. - SHADOW have offset < 0. - NVM have register > 0 Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
197 lines
3.6 KiB
C
197 lines
3.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2018, STMicroelectronics - All Rights Reserved
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <fuse.h>
|
|
#include <misc.h>
|
|
#include <errno.h>
|
|
#include <dm/device.h>
|
|
#include <dm/uclass.h>
|
|
#include <power/stpmic1.h>
|
|
|
|
#define STM32MP_OTP_BANK 0
|
|
#define STM32MP_NVM_BANK 1
|
|
|
|
/*
|
|
* The 'fuse' command API
|
|
*/
|
|
int fuse_read(u32 bank, u32 word, u32 *val)
|
|
{
|
|
int ret;
|
|
struct udevice *dev;
|
|
|
|
switch (bank) {
|
|
case STM32MP_OTP_BANK:
|
|
ret = uclass_get_device_by_driver(UCLASS_MISC,
|
|
DM_GET_DRIVER(stm32mp_bsec),
|
|
&dev);
|
|
if (ret)
|
|
return ret;
|
|
ret = misc_read(dev, word * 4 + STM32_BSEC_SHADOW_OFFSET,
|
|
val, 4);
|
|
if (ret != 4)
|
|
ret = -EINVAL;
|
|
else
|
|
ret = 0;
|
|
break;
|
|
|
|
#ifdef CONFIG_PMIC_STPMIC1
|
|
case STM32MP_NVM_BANK:
|
|
ret = uclass_get_device_by_driver(UCLASS_MISC,
|
|
DM_GET_DRIVER(stpmic1_nvm),
|
|
&dev);
|
|
if (ret)
|
|
return ret;
|
|
*val = 0;
|
|
ret = misc_read(dev, -word, val, 1);
|
|
if (ret != 1)
|
|
ret = -EINVAL;
|
|
else
|
|
ret = 0;
|
|
break;
|
|
#endif /* CONFIG_PMIC_STPMIC1 */
|
|
|
|
default:
|
|
printf("stm32mp %s: wrong value for bank %i\n", __func__, bank);
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int fuse_prog(u32 bank, u32 word, u32 val)
|
|
{
|
|
struct udevice *dev;
|
|
int ret;
|
|
|
|
switch (bank) {
|
|
case STM32MP_OTP_BANK:
|
|
ret = uclass_get_device_by_driver(UCLASS_MISC,
|
|
DM_GET_DRIVER(stm32mp_bsec),
|
|
&dev);
|
|
if (ret)
|
|
return ret;
|
|
ret = misc_write(dev, word * 4 + STM32_BSEC_OTP_OFFSET,
|
|
&val, 4);
|
|
if (ret != 4)
|
|
ret = -EINVAL;
|
|
else
|
|
ret = 0;
|
|
break;
|
|
|
|
#ifdef CONFIG_PMIC_STPMIC1
|
|
case STM32MP_NVM_BANK:
|
|
ret = uclass_get_device_by_driver(UCLASS_MISC,
|
|
DM_GET_DRIVER(stpmic1_nvm),
|
|
&dev);
|
|
if (ret)
|
|
return ret;
|
|
ret = misc_write(dev, word, &val, 1);
|
|
if (ret != 1)
|
|
ret = -EINVAL;
|
|
else
|
|
ret = 0;
|
|
break;
|
|
#endif /* CONFIG_PMIC_STPMIC1 */
|
|
|
|
default:
|
|
printf("stm32mp %s: wrong value for bank %i\n", __func__, bank);
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int fuse_sense(u32 bank, u32 word, u32 *val)
|
|
{
|
|
struct udevice *dev;
|
|
int ret;
|
|
|
|
switch (bank) {
|
|
case STM32MP_OTP_BANK:
|
|
ret = uclass_get_device_by_driver(UCLASS_MISC,
|
|
DM_GET_DRIVER(stm32mp_bsec),
|
|
&dev);
|
|
if (ret)
|
|
return ret;
|
|
ret = misc_read(dev, word * 4 + STM32_BSEC_OTP_OFFSET, val, 4);
|
|
if (ret != 4)
|
|
ret = -EINVAL;
|
|
else
|
|
ret = 0;
|
|
break;
|
|
|
|
#ifdef CONFIG_PMIC_STPMIC1
|
|
case STM32MP_NVM_BANK:
|
|
ret = uclass_get_device_by_driver(UCLASS_MISC,
|
|
DM_GET_DRIVER(stpmic1_nvm),
|
|
&dev);
|
|
if (ret)
|
|
return ret;
|
|
*val = 0;
|
|
ret = misc_read(dev, word, val, 1);
|
|
if (ret != 1)
|
|
ret = -EINVAL;
|
|
else
|
|
ret = 0;
|
|
break;
|
|
#endif /* CONFIG_PMIC_STPMIC1 */
|
|
|
|
default:
|
|
printf("stm32mp %s: wrong value for bank %i\n", __func__, bank);
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int fuse_override(u32 bank, u32 word, u32 val)
|
|
{
|
|
struct udevice *dev;
|
|
int ret;
|
|
|
|
switch (bank) {
|
|
case STM32MP_OTP_BANK:
|
|
ret = uclass_get_device_by_driver(UCLASS_MISC,
|
|
DM_GET_DRIVER(stm32mp_bsec),
|
|
&dev);
|
|
if (ret)
|
|
return ret;
|
|
ret = misc_write(dev, word * 4 + STM32_BSEC_SHADOW_OFFSET,
|
|
&val, 4);
|
|
if (ret != 4)
|
|
ret = -EINVAL;
|
|
else
|
|
ret = 0;
|
|
break;
|
|
|
|
#ifdef CONFIG_PMIC_STPMIC1
|
|
case STM32MP_NVM_BANK:
|
|
ret = uclass_get_device_by_driver(UCLASS_MISC,
|
|
DM_GET_DRIVER(stpmic1_nvm),
|
|
&dev);
|
|
if (ret)
|
|
return ret;
|
|
ret = misc_write(dev, -word, &val, 1);
|
|
if (ret != 1)
|
|
ret = -EINVAL;
|
|
else
|
|
ret = 0;
|
|
break;
|
|
#endif /* CONFIG_PMIC_STPMIC1 */
|
|
|
|
default:
|
|
printf("stm32mp %s: wrong value for bank %i\n",
|
|
__func__, bank);
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|