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arm: stm32: add new architecture for STM32MP family

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- add new arch stm32mp for STM32 MPU/Soc based on Cortex A
- support for stm32mp157 SOC
- SPL is used as first boot stage loader
- using driver model for all the drivers, even in SPL
- all security feature are deactivated (ETZC and TZC)
- reused STM32 MCU drivers when it is possible

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
This commit is contained in:
Patrick Delaunay 2018-03-12 10:46:10 +01:00 committed by Tom Rini
parent 35746c0138
commit 2514c2d0e6
14 changed files with 475 additions and 6 deletions
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5
MAINTAINERS
View file

@ -195,6 +195,11 @@ T: git git://git.denx.de/u-boot-stm.git
F: arch/arm/cpu/arm926ejs/spear/
F: arch/arm/include/asm/arch-spear/
ARM STM STM32MP
M: Patrick Delaunay <patrick.delaunay@st.com>
S: Maintained
F: arch/arm/mach-stm32mp
ARM STM STV0991
M: Vikas Manocha <vikas.manocha@st.com>
S: Maintained

25
arch/arm/Kconfig
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@ -1132,7 +1132,7 @@ config ARCH_UNIPHIER
(formerly, System LSI Business Division of Panasonic Corporation)
config STM32
bool "Support STM32"
bool "Support STMicroelectronics STM32 MCU with cortex M"
select CPU_V7M
select DM
select DM_SERIAL
@ -1150,6 +1150,27 @@ config ARCH_STI
Support for STMicroelectronics STiH407/10 SoC family.
This SoC is used on Linaro 96Board STiH410-B2260
config ARCH_STM32MP
bool "Support STMicroelectronics STM32MP Socs with cortex A"
select BOARD_LATE_INIT
select CLK
select DM
select DM_GPIO
select DM_RESET
select DM_SERIAL
select OF_CONTROL
select OF_LIBFDT
select PINCTRL
select REGMAP
select SUPPORT_SPL
select SYSCON
select SYS_THUMB_BUILD
help
Support for STM32MP SoC family developed by STMicroelectronics,
MPUs based on ARM cortex A core
U-BOOT is running in DDR and SPL support is the unsecure First Stage
BootLoader (FSBL)
config ARCH_ROCKCHIP
bool "Support Rockchip SoCs"
select OF_CONTROL
@ -1262,6 +1283,8 @@ source "arch/arm/mach-sti/Kconfig"
source "arch/arm/mach-stm32/Kconfig"
source "arch/arm/mach-stm32mp/Kconfig"
source "arch/arm/mach-sunxi/Kconfig"
source "arch/arm/mach-tegra/Kconfig"

1
arch/arm/Makefile
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@ -72,6 +72,7 @@ machine-$(CONFIG_ARCH_SOCFPGA) += socfpga
machine-$(CONFIG_ARCH_RMOBILE) += rmobile
machine-$(CONFIG_ARCH_ROCKCHIP) += rockchip
machine-$(CONFIG_STM32) += stm32
machine-$(CONFIG_ARCH_STM32MP) += stm32mp
machine-$(CONFIG_TEGRA) += tegra
machine-$(CONFIG_ARCH_UNIPHIER) += uniphier
machine-$(CONFIG_ARCH_ZYNQ) += zynq

41
arch/arm/mach-stm32mp/Kconfig Normal file
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@ -0,0 +1,41 @@
if ARCH_STM32MP
config SPL
select SPL_BOARD_INIT
select SPL_CLK
select SPL_DM
select SPL_DM_SEQ_ALIAS
select SPL_FRAMEWORK
select SPL_GPIO_SUPPORT
select SPL_LIBCOMMON_SUPPORT
select SPL_LIBGENERIC_SUPPORT
select SPL_OF_CONTROL
select SPL_OF_TRANSLATE
select SPL_PINCTRL
select SPL_REGMAP
select SPL_RESET_SUPPORT
select SPL_SERIAL_SUPPORT
select SPL_SYSCON
imply SPL_LIBDISK_SUPPORT
config SYS_SOC
default "stm32mp"
config TARGET_STM32MP1
bool "Support stm32mp1xx"
select CPU_V7
select PINCTRL_STM32
select STM32_RESET
help
target STMicroelectronics SOC STM32MP1 family
STMicroelectronics MPU with core ARMv7
config SYS_TEXT_BASE
prompt "U-Boot base address"
default 0xC0100000
help
configure the U-Boot base address
when DDR driver is used:
DDR + 1MB (0xC0100000)
endif

10
arch/arm/mach-stm32mp/Makefile Normal file
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@ -0,0 +1,10 @@
#
# Copyright (C) 2018, STMicroelectronics - All Rights Reserved
#
# SPDX-License-Identifier: GPL-2.0+ BSD-3-Clause
#
obj-y += cpu.o
obj-y += dram_init.o
obj-$(CONFIG_SPL_BUILD) += spl.o

14
arch/arm/mach-stm32mp/config.mk Normal file
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@ -0,0 +1,14 @@
#
# Copyright (C) 2018, STMicroelectronics - All Rights Reserved
#
# SPDX-License-Identifier: GPL-2.0+ BSD-3-Clause
#
ALL-$(CONFIG_SPL_BUILD) += spl/u-boot-spl.stm32
MKIMAGEFLAGS_u-boot-spl.stm32 = -T stm32image -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE)
spl/u-boot-spl.stm32: MKIMAGEOUTPUT = spl/u-boot-spl.stm32.log
spl/u-boot-spl.stm32: spl/u-boot-spl.bin FORCE
$(call if_changed,mkimage)

139
arch/arm/mach-stm32mp/cpu.c Normal file
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@ -0,0 +1,139 @@
/*
* Copyright (C) 2018, STMicroelectronics - All Rights Reserved
*
* SPDX-License-Identifier: GPL-2.0+ BSD-3-Clause
*/
#include <common.h>
#include <clk.h>
#include <asm/io.h>
#include <asm/arch/stm32.h>
void enable_caches(void)
{
/* Enable D-cache. I-cache is already enabled in start.S */
dcache_enable();
}
#if !defined(CONFIG_SPL) || defined(CONFIG_SPL_BUILD)
/**********************************************
* Security init
*********************************************/
#define ETZPC_TZMA1_SIZE (STM32_ETZPC_BASE + 0x04)
#define ETZPC_DECPROT0 (STM32_ETZPC_BASE + 0x10)
#define TZC_GATE_KEEPER (STM32_TZC_BASE + 0x008)
#define TZC_REGION_ATTRIBUTE0 (STM32_TZC_BASE + 0x110)
#define TZC_REGION_ID_ACCESS0 (STM32_TZC_BASE + 0x114)
#define TAMP_CR1 (STM32_TAMP_BASE + 0x00)
#define PWR_CR1 (STM32_PWR_BASE + 0x00)
#define PWR_CR1_DBP BIT(8)
#define RCC_TZCR (STM32_RCC_BASE + 0x00)
#define RCC_BDCR (STM32_RCC_BASE + 0x0140)
#define RCC_MP_APB5ENSETR (STM32_RCC_BASE + 0x0208)
#define RCC_BDCR_VSWRST BIT(31)
#define RCC_BDCR_RTCSRC GENMASK(17, 16)
static void security_init(void)
{
/* Disable the backup domain write protection */
/* the protection is enable at each reset by hardware */
/* And must be disable by software */
setbits_le32(PWR_CR1, PWR_CR1_DBP);
while (!(readl(PWR_CR1) & PWR_CR1_DBP))
;
/* If RTC clock isn't enable so this is a cold boot then we need
* to reset the backup domain
*/
if (!(readl(RCC_BDCR) & RCC_BDCR_RTCSRC)) {
setbits_le32(RCC_BDCR, RCC_BDCR_VSWRST);
while (!(readl(RCC_BDCR) & RCC_BDCR_VSWRST))
;
clrbits_le32(RCC_BDCR, RCC_BDCR_VSWRST);
}
/* allow non secure access in Write/Read for all peripheral */
writel(GENMASK(25, 0), ETZPC_DECPROT0);
/* Open SYSRAM for no secure access */
writel(0x0, ETZPC_TZMA1_SIZE);
/* enable TZC1 TZC2 clock */
writel(BIT(11) | BIT(12), RCC_MP_APB5ENSETR);
/* Region 0 set to no access by default */
/* bit 0 / 16 => nsaid0 read/write Enable
* bit 1 / 17 => nsaid1 read/write Enable
* ...
* bit 15 / 31 => nsaid15 read/write Enable
*/
writel(0xFFFFFFFF, TZC_REGION_ID_ACCESS0);
/* bit 30 / 31 => Secure Global Enable : write/read */
/* bit 0 / 1 => Region Enable for filter 0/1 */
writel(BIT(0) | BIT(1) | BIT(30) | BIT(31), TZC_REGION_ATTRIBUTE0);
/* Enable Filter 0 and 1 */
setbits_le32(TZC_GATE_KEEPER, BIT(0) | BIT(1));
/* RCC trust zone deactivated */
writel(0x0, RCC_TZCR);
/* TAMP: deactivate the internal tamper
* Bit 23 ITAMP8E: monotonic counter overflow
* Bit 20 ITAMP5E: RTC calendar overflow
* Bit 19 ITAMP4E: HSE monitoring
* Bit 18 ITAMP3E: LSE monitoring
* Bit 16 ITAMP1E: RTC power domain supply monitoring
*/
writel(0x0, TAMP_CR1);
}
/**********************************************
* Debug init
*********************************************/
#define RCC_DBGCFGR (STM32_RCC_BASE + 0x080C)
#define RCC_DBGCFGR_DBGCKEN BIT(8)
#define DBGMCU_APB4FZ1 (STM32_DBGMCU_BASE + 0x2C)
#define DBGMCU_APB4FZ1_IWDG2 BIT(2)
static void dbgmcu_init(void)
{
setbits_le32(RCC_DBGCFGR, RCC_DBGCFGR_DBGCKEN);
/* Freeze IWDG2 if Cortex-A7 is in debug mode */
setbits_le32(DBGMCU_APB4FZ1, DBGMCU_APB4FZ1_IWDG2);
}
#endif /* !defined(CONFIG_SPL) || defined(CONFIG_SPL_BUILD) */
int arch_cpu_init(void)
{
/* early armv7 timer init: needed for polling */
timer_init();
#if !defined(CONFIG_SPL) || defined(CONFIG_SPL_BUILD)
dbgmcu_init();
security_init();
#endif
return 0;
}
#if defined(CONFIG_DISPLAY_CPUINFO)
int print_cpuinfo(void)
{
printf("CPU: STM32MP15x\n");
return 0;
}
#endif /* CONFIG_DISPLAY_CPUINFO */
void reset_cpu(ulong addr)
{
}

34
arch/arm/mach-stm32mp/dram_init.c Normal file
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@ -0,0 +1,34 @@
/*
* Copyright (C) 2018, STMicroelectronics - All Rights Reserved
*
* SPDX-License-Identifier: GPL-2.0+ BSD-3-Clause
*/
#include <common.h>
#include <dm.h>
#include <ram.h>
DECLARE_GLOBAL_DATA_PTR;
int dram_init(void)
{
struct ram_info ram;
struct udevice *dev;
int ret;
ret = uclass_get_device(UCLASS_RAM, 0, &dev);
if (ret) {
debug("RAM init failed: %d\n", ret);
return ret;
}
ret = ram_get_info(dev, &ram);
if (ret) {
debug("Cannot get RAM size: %d\n", ret);
return ret;
}
debug("RAM init base=%lx, size=%x\n", ram.base, ram.size);
gd->ram_size = ram.size;
return 0;
}

115
arch/arm/mach-stm32mp/include/mach/gpio.h Normal file
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@ -0,0 +1,115 @@
/*
* (C) Copyright 2016
* Vikas Manocha, <vikas.manocha@st.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _STM32_GPIO_H_
#define _STM32_GPIO_H_
#include <asm/gpio.h>
enum stm32_gpio_port {
STM32_GPIO_PORT_A = 0,
STM32_GPIO_PORT_B,
STM32_GPIO_PORT_C,
STM32_GPIO_PORT_D,
STM32_GPIO_PORT_E,
STM32_GPIO_PORT_F,
STM32_GPIO_PORT_G,
STM32_GPIO_PORT_H,
STM32_GPIO_PORT_I
};
enum stm32_gpio_pin {
STM32_GPIO_PIN_0 = 0,
STM32_GPIO_PIN_1,
STM32_GPIO_PIN_2,
STM32_GPIO_PIN_3,
STM32_GPIO_PIN_4,
STM32_GPIO_PIN_5,
STM32_GPIO_PIN_6,
STM32_GPIO_PIN_7,
STM32_GPIO_PIN_8,
STM32_GPIO_PIN_9,
STM32_GPIO_PIN_10,
STM32_GPIO_PIN_11,
STM32_GPIO_PIN_12,
STM32_GPIO_PIN_13,
STM32_GPIO_PIN_14,
STM32_GPIO_PIN_15
};
enum stm32_gpio_mode {
STM32_GPIO_MODE_IN = 0,
STM32_GPIO_MODE_OUT,
STM32_GPIO_MODE_AF,
STM32_GPIO_MODE_AN
};
enum stm32_gpio_otype {
STM32_GPIO_OTYPE_PP = 0,
STM32_GPIO_OTYPE_OD
};
enum stm32_gpio_speed {
STM32_GPIO_SPEED_2M = 0,
STM32_GPIO_SPEED_25M,
STM32_GPIO_SPEED_50M,
STM32_GPIO_SPEED_100M
};
enum stm32_gpio_pupd {
STM32_GPIO_PUPD_NO = 0,
STM32_GPIO_PUPD_UP,
STM32_GPIO_PUPD_DOWN
};
enum stm32_gpio_af {
STM32_GPIO_AF0 = 0,
STM32_GPIO_AF1,
STM32_GPIO_AF2,
STM32_GPIO_AF3,
STM32_GPIO_AF4,
STM32_GPIO_AF5,
STM32_GPIO_AF6,
STM32_GPIO_AF7,
STM32_GPIO_AF8,
STM32_GPIO_AF9,
STM32_GPIO_AF10,
STM32_GPIO_AF11,
STM32_GPIO_AF12,
STM32_GPIO_AF13,
STM32_GPIO_AF14,
STM32_GPIO_AF15
};
struct stm32_gpio_dsc {
enum stm32_gpio_port port;
enum stm32_gpio_pin pin;
};
struct stm32_gpio_ctl {
enum stm32_gpio_mode mode;
enum stm32_gpio_otype otype;
enum stm32_gpio_speed speed;
enum stm32_gpio_pupd pupd;
enum stm32_gpio_af af;
};
struct stm32_gpio_regs {
u32 moder; /* GPIO port mode */
u32 otyper; /* GPIO port output type */
u32 ospeedr; /* GPIO port output speed */
u32 pupdr; /* GPIO port pull-up/pull-down */
u32 idr; /* GPIO port input data */
u32 odr; /* GPIO port output data */
u32 bsrr; /* GPIO port bit set/reset */
u32 lckr; /* GPIO port configuration lock */
u32 afr[2]; /* GPIO alternate function */
};
struct stm32_gpio_priv {
struct stm32_gpio_regs *regs;
};
#endif /* _STM32_GPIO_H_ */

27
arch/arm/mach-stm32mp/include/mach/stm32.h Normal file
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@ -0,0 +1,27 @@
/*
* Copyright (C) 2018, STMicroelectronics - All Rights Reserved
*
* SPDX-License-Identifier: GPL-2.0+ BSD-3-Clause
*/
#ifndef _MACH_STM32_H_
#define _MACH_STM32_H_
/*
* Peripheral memory map
* only address used before device tree parsing
*/
#define STM32_RCC_BASE 0x50000000
#define STM32_PWR_BASE 0x50001000
#define STM32_DBGMCU_BASE 0x50081000
#define STM32_TZC_BASE 0x5C006000
#define STM32_ETZPC_BASE 0x5C007000
#define STM32_TAMP_BASE 0x5C00A000
#define STM32_SYSRAM_BASE 0x2FFC0000
#define STM32_SYSRAM_SIZE SZ_256K
#define STM32_DDR_BASE 0xC0000000
#define STM32_DDR_SIZE SZ_1G
#endif /* _MACH_STM32_H_ */

60
arch/arm/mach-stm32mp/spl.c Normal file
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@ -0,0 +1,60 @@
/*
* Copyright (C) 2018, STMicroelectronics - All Rights Reserved
*
* SPDX-License-Identifier: GPL-2.0+ BSD-3-Clause
*/
#include <common.h>
#include <dm.h>
#include <spl.h>
u32 spl_boot_device(void)
{
return BOOT_DEVICE_MMC1;
}
u32 spl_boot_mode(const u32 boot_device)
{
return MMCSD_MODE_RAW;
}
void board_init_f(ulong dummy)
{
struct udevice *dev;
int ret;
arch_cpu_init();
ret = spl_early_init();
if (ret) {
debug("spl_early_init() failed: %d\n", ret);
hang();
}
ret = uclass_get_device(UCLASS_CLK, 0, &dev);
if (ret) {
debug("Clock init failed: %d\n", ret);
return;
}
ret = uclass_get_device(UCLASS_RESET, 0, &dev);
if (ret) {
debug("Reset init failed: %d\n", ret);
return;
}
ret = uclass_get_device(UCLASS_PINCTRL, 0, &dev);
if (ret) {
debug("%s: Cannot find pinctrl device\n", __func__);
return;
}
/* enable console uart printing */
preloader_console_init();
ret = uclass_get_device(UCLASS_RAM, 0, &dev);
if (ret) {
debug("DRAM init failed: %d\n", ret);
return;
}
}

2
drivers/gpio/Kconfig
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@ -234,7 +234,7 @@ config PIC32_GPIO
config STM32F7_GPIO
bool "ST STM32 GPIO driver"
depends on DM_GPIO && STM32
depends on DM_GPIO && (STM32 || ARCH_STM32MP)
default y
help
Device model driver support for STM32 GPIO controller. It should be

2
drivers/i2c/Kconfig
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@ -207,7 +207,7 @@ config SYS_I2C_S3C24X0
config SYS_I2C_STM32F7
bool "STMicroelectronics STM32F7 I2C support"
depends on (STM32F7 || STM32H7) && DM_I2C
depends on (STM32F7 || STM32H7 || ARCH_STM32MP) && DM_I2C
help
Enable this option to add support for STM32 I2C controller
introduced with STM32F7/H7 SoCs. This I2C controller supports :

6
drivers/serial/Kconfig
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@ -609,10 +609,10 @@ config STI_ASC_SERIAL
config STM32_SERIAL
bool "STMicroelectronics STM32 SoCs on-chip UART"
depends on DM_SERIAL && (STM32F4 || STM32F7 || STM32H7)
depends on DM_SERIAL && (STM32F4 || STM32F7 || STM32H7 || ARCH_STM32MP)
help
If you have a machine based on a STM32 F4, F7 or H7 SoC you can
enable its onboard serial ports, say Y to this option.
If you have a machine based on a STM32 F4, F7, H7 or MP1 SOC
you can enable its onboard serial ports, say Y to this option.
If unsure, say N.
config ZYNQ_SERIAL