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u-boot-brain/arch/arm/cpu/armv7/sunxi/board.c
Chen-Yu Tsai 5823664fb8 sunxi: Support Secure Memory Touch Arbiter (SMTA) in sun8i H3 
Secure Memory Touch Arbiter is the same thing as the TrustZone
Protection Controller found on A31/A31s.

Access to many peripherals on the H3 can be controlled by the SMTA,
and the settings default to secure access only.

This patch supports the new settings, and sets them to allow non-secure
access.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2016-01-26 16:20:04 +01:00

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/*
* (C) Copyright 2012 Henrik Nordstrom <henrik@henriknordstrom.net>
*
* (C) Copyright 2007-2011
* Allwinner Technology Co., Ltd. <www.allwinnertech.com>
* Tom Cubie <tangliang@allwinnertech.com>
*
* Some init for sunxi platform.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <mmc.h>
#include <i2c.h>
#include <serial.h>
#ifdef CONFIG_SPL_BUILD
#include <spl.h>
#endif
#include <asm/gpio.h>
#include <asm/io.h>
#include <asm/arch/clock.h>
#include <asm/arch/gpio.h>
#include <asm/arch/spl.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/timer.h>
#include <asm/arch/tzpc.h>
#include <asm/arch/mmc.h>
#include <linux/compiler.h>
struct fel_stash {
uint32_t sp;
uint32_t lr;
uint32_t cpsr;
uint32_t sctlr;
uint32_t vbar;
uint32_t cr;
};
struct fel_stash fel_stash __attribute__((section(".data")));
static int gpio_init(void)
{
#if CONFIG_CONS_INDEX == 1 && defined(CONFIG_UART0_PORT_F)
#if defined(CONFIG_MACH_SUN4I) || defined(CONFIG_MACH_SUN7I)
/* disable GPB22,23 as uart0 tx,rx to avoid conflict */
sunxi_gpio_set_cfgpin(SUNXI_GPB(22), SUNXI_GPIO_INPUT);
sunxi_gpio_set_cfgpin(SUNXI_GPB(23), SUNXI_GPIO_INPUT);
#endif
#if defined(CONFIG_MACH_SUN8I)
sunxi_gpio_set_cfgpin(SUNXI_GPF(2), SUN8I_GPF_UART0);
sunxi_gpio_set_cfgpin(SUNXI_GPF(4), SUN8I_GPF_UART0);
#else
sunxi_gpio_set_cfgpin(SUNXI_GPF(2), SUNXI_GPF_UART0);
sunxi_gpio_set_cfgpin(SUNXI_GPF(4), SUNXI_GPF_UART0);
#endif
sunxi_gpio_set_pull(SUNXI_GPF(4), 1);
#elif CONFIG_CONS_INDEX == 1 && (defined(CONFIG_MACH_SUN4I) || defined(CONFIG_MACH_SUN7I))
sunxi_gpio_set_cfgpin(SUNXI_GPB(22), SUN4I_GPB_UART0);
sunxi_gpio_set_cfgpin(SUNXI_GPB(23), SUN4I_GPB_UART0);
sunxi_gpio_set_pull(SUNXI_GPB(23), SUNXI_GPIO_PULL_UP);
#elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN5I)
sunxi_gpio_set_cfgpin(SUNXI_GPB(19), SUN5I_GPB_UART0);
sunxi_gpio_set_cfgpin(SUNXI_GPB(20), SUN5I_GPB_UART0);
sunxi_gpio_set_pull(SUNXI_GPB(20), SUNXI_GPIO_PULL_UP);
#elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN6I)
sunxi_gpio_set_cfgpin(SUNXI_GPH(20), SUN6I_GPH_UART0);
sunxi_gpio_set_cfgpin(SUNXI_GPH(21), SUN6I_GPH_UART0);
sunxi_gpio_set_pull(SUNXI_GPH(21), SUNXI_GPIO_PULL_UP);
#elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN8I_A33)
sunxi_gpio_set_cfgpin(SUNXI_GPB(0), SUN8I_A33_GPB_UART0);
sunxi_gpio_set_cfgpin(SUNXI_GPB(1), SUN8I_A33_GPB_UART0);
sunxi_gpio_set_pull(SUNXI_GPB(1), SUNXI_GPIO_PULL_UP);
#elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN8I_H3)
sunxi_gpio_set_cfgpin(SUNXI_GPA(4), SUN8I_H3_GPA_UART0);
sunxi_gpio_set_cfgpin(SUNXI_GPA(5), SUN8I_H3_GPA_UART0);
sunxi_gpio_set_pull(SUNXI_GPA(5), SUNXI_GPIO_PULL_UP);
#elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN8I_A83T)
sunxi_gpio_set_cfgpin(SUNXI_GPB(9), SUN8I_A83T_GPB_UART0);
sunxi_gpio_set_cfgpin(SUNXI_GPB(10), SUN8I_A83T_GPB_UART0);
sunxi_gpio_set_pull(SUNXI_GPB(10), SUNXI_GPIO_PULL_UP);
#elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN9I)
sunxi_gpio_set_cfgpin(SUNXI_GPH(12), SUN9I_GPH_UART0);
sunxi_gpio_set_cfgpin(SUNXI_GPH(13), SUN9I_GPH_UART0);
sunxi_gpio_set_pull(SUNXI_GPH(13), SUNXI_GPIO_PULL_UP);
#elif CONFIG_CONS_INDEX == 2 && defined(CONFIG_MACH_SUN5I)
sunxi_gpio_set_cfgpin(SUNXI_GPG(3), SUN5I_GPG_UART1);
sunxi_gpio_set_cfgpin(SUNXI_GPG(4), SUN5I_GPG_UART1);
sunxi_gpio_set_pull(SUNXI_GPG(4), SUNXI_GPIO_PULL_UP);
#elif CONFIG_CONS_INDEX == 3 && defined(CONFIG_MACH_SUN8I)
sunxi_gpio_set_cfgpin(SUNXI_GPB(0), SUN8I_GPB_UART2);
sunxi_gpio_set_cfgpin(SUNXI_GPB(1), SUN8I_GPB_UART2);
sunxi_gpio_set_pull(SUNXI_GPB(1), SUNXI_GPIO_PULL_UP);
#elif CONFIG_CONS_INDEX == 5 && defined(CONFIG_MACH_SUN8I)
sunxi_gpio_set_cfgpin(SUNXI_GPL(2), SUN8I_GPL_R_UART);
sunxi_gpio_set_cfgpin(SUNXI_GPL(3), SUN8I_GPL_R_UART);
sunxi_gpio_set_pull(SUNXI_GPL(3), SUNXI_GPIO_PULL_UP);
#else
#error Unsupported console port number. Please fix pin mux settings in board.c
#endif
return 0;
}
int spl_board_load_image(void)
{
debug("Returning to FEL sp=%x, lr=%x\n", fel_stash.sp, fel_stash.lr);
return_to_fel(fel_stash.sp, fel_stash.lr);
return 0;
}
void s_init(void)
{
#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I_A23
/* Magic (undocmented) value taken from boot0, without this DRAM
* access gets messed up (seems cache related) */
setbits_le32(SUNXI_SRAMC_BASE + 0x44, 0x1800);
#endif
#if defined CONFIG_MACH_SUN6I || \
defined CONFIG_MACH_SUN7I || \
defined CONFIG_MACH_SUN8I
/* Enable SMP mode for CPU0, by setting bit 6 of Auxiliary Ctl reg */
asm volatile(
"mrc p15, 0, r0, c1, c0, 1\n"
"orr r0, r0, #1 << 6\n"
"mcr p15, 0, r0, c1, c0, 1\n");
#endif
#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I_H3
/* Enable non-secure access to some peripherals */
tzpc_init();
#endif
clock_init();
timer_init();
gpio_init();
i2c_init_board();
}
#ifdef CONFIG_SPL_BUILD
DECLARE_GLOBAL_DATA_PTR;
/* The sunxi internal brom will try to loader external bootloader
* from mmc0, nand flash, mmc2.
*/
u32 spl_boot_device(void)
{
__maybe_unused struct mmc *mmc0, *mmc1;
/*
* When booting from the SD card or NAND memory, the "eGON.BT0"
* signature is expected to be found in memory at the address 0x0004
* (see the "mksunxiboot" tool, which generates this header).
*
* When booting in the FEL mode over USB, this signature is patched in
* memory and replaced with something else by the 'fel' tool. This other
* signature is selected in such a way, that it can't be present in a
* valid bootable SD card image (because the BROM would refuse to
* execute the SPL in this case).
*
* This checks for the signature and if it is not found returns to
* the FEL code in the BROM to wait and receive the main u-boot
* binary over USB. If it is found, it determines where SPL was
* read from.
*/
if (!is_boot0_magic(SPL_ADDR + 4)) /* eGON.BT0 */
return BOOT_DEVICE_BOARD;
/* The BROM will try to boot from mmc0 first, so try that first. */
#ifdef CONFIG_MMC
mmc_initialize(gd->bd);
mmc0 = find_mmc_device(0);
if (sunxi_mmc_has_egon_boot_signature(mmc0))
return BOOT_DEVICE_MMC1;
#endif
/* Fallback to booting NAND if enabled. */
if (IS_ENABLED(CONFIG_SPL_NAND_SUPPORT))
return BOOT_DEVICE_NAND;
#ifdef CONFIG_MMC
if (CONFIG_MMC_SUNXI_SLOT_EXTRA == 2) {
mmc1 = find_mmc_device(1);
if (sunxi_mmc_has_egon_boot_signature(mmc1))
return BOOT_DEVICE_MMC2;
}
#endif
panic("Could not determine boot source\n");
return -1; /* Never reached */
}
/* No confirmation data available in SPL yet. Hardcode bootmode */
u32 spl_boot_mode(void)
{
return MMCSD_MODE_RAW;
}
void board_init_f(ulong dummy)
{
spl_init();
preloader_console_init();
#ifdef CONFIG_SPL_I2C_SUPPORT
/* Needed early by sunxi_board_init if PMU is enabled */
i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
#endif
sunxi_board_init();
}
#endif
void reset_cpu(ulong addr)
{
#ifdef CONFIG_SUNXI_GEN_SUN4I
static const struct sunxi_wdog *wdog =
&((struct sunxi_timer_reg *)SUNXI_TIMER_BASE)->wdog;
/* Set the watchdog for its shortest interval (.5s) and wait */
writel(WDT_MODE_RESET_EN | WDT_MODE_EN, &wdog->mode);
writel(WDT_CTRL_KEY | WDT_CTRL_RESTART, &wdog->ctl);
while (1) {
/* sun5i sometimes gets stuck without this */
writel(WDT_MODE_RESET_EN | WDT_MODE_EN, &wdog->mode);
}
#endif
#ifdef CONFIG_SUNXI_GEN_SUN6I
static const struct sunxi_wdog *wdog =
((struct sunxi_timer_reg *)SUNXI_TIMER_BASE)->wdog;
/* Set the watchdog for its shortest interval (.5s) and wait */
writel(WDT_CFG_RESET, &wdog->cfg);
writel(WDT_MODE_EN, &wdog->mode);
writel(WDT_CTRL_KEY | WDT_CTRL_RESTART, &wdog->ctl);
while (1) { }
#endif
}
#ifndef CONFIG_SYS_DCACHE_OFF
void enable_caches(void)
{
/* Enable D-cache. I-cache is already enabled in start.S */
dcache_enable();
}
#endif
#ifdef CONFIG_CMD_NET
/*
* Initializes on-chip ethernet controllers.
* to override, implement board_eth_init()
*/
int cpu_eth_init(bd_t *bis)
{
__maybe_unused int rc;
#ifdef CONFIG_MACPWR
gpio_request(CONFIG_MACPWR, "macpwr");
gpio_direction_output(CONFIG_MACPWR, 1);
mdelay(200);
#endif
#ifdef CONFIG_SUNXI_GMAC
rc = sunxi_gmac_initialize(bis);
if (rc < 0) {
printf("sunxi: failed to initialize gmac\n");
return rc;
}
#endif
return 0;
}
#endif
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