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u-boot/board/toradex/apalis-imx8x/apalis-imx8x.c
Harald Seiler 35b65dd8ef reset: Remove addr parameter from reset_cpu()
Historically, the reset_cpu() function had an `addr` parameter which was
meant to pass in an address of the reset vector location, where the CPU
should reset to.  This feature is no longer used anywhere in U-Boot as
all reset_cpu() implementations now ignore the passed value.  Generic
code has been added which always calls reset_cpu() with `0` which means
this feature can no longer be used easily anyway.

Over time, many implementations seem to have "misunderstood" the
existence of this parameter as a way to customize/parameterize the reset
(e.g.  COLD vs WARM resets).  As this is not properly supported, the
code will almost always not do what it is intended to (because all
call-sites just call reset_cpu() with 0).

To avoid confusion and to clean up the codebase from unused left-overs
of the past, remove the `addr` parameter entirely.  Code which intends
to support different kinds of resets should be rewritten as a sysreset
driver instead.

This transformation was done with the following coccinelle patch:

    @@
    expression argvalue;
    @@
    - reset_cpu(argvalue)
    + reset_cpu()

    @@
    identifier argname;
    type argtype;
    @@
    - reset_cpu(argtype argname)
    + reset_cpu(void)
    { ... }

Signed-off-by: Harald Seiler <hws@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
2021-03-02 14:03:02 -05:00

155 lines
3 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2020 Toradex
*/
#include <common.h>
#include <cpu_func.h>
#include <init.h>
#include <asm/arch/clock.h>
#include <asm/arch/imx8-pins.h>
#include <asm/arch/iomux.h>
#include <asm/arch/sci/sci.h>
#include <asm/arch/sys_proto.h>
#include <asm/global_data.h>
#include <asm/gpio.h>
#include <asm/io.h>
#include <env.h>
#include <errno.h>
#include <linux/libfdt.h>
#include "../common/tdx-cfg-block.h"
DECLARE_GLOBAL_DATA_PTR;
#define UART_PAD_CTRL ((SC_PAD_CONFIG_OUT_IN << PADRING_CONFIG_SHIFT) | \
(SC_PAD_ISO_OFF << PADRING_LPCONFIG_SHIFT) | \
(SC_PAD_28FDSOI_DSE_DV_HIGH << PADRING_DSE_SHIFT) | \
(SC_PAD_28FDSOI_PS_PU << PADRING_PULL_SHIFT))
static iomux_cfg_t uart1_pads[] = {
SC_P_UART1_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
SC_P_UART1_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
};
static void setup_iomux_uart(void)
{
imx8_iomux_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
}
void board_mem_get_layout(u64 *phys_sdram_1_start,
u64 *phys_sdram_1_size,
u64 *phys_sdram_2_start,
u64 *phys_sdram_2_size)
{
u32 is_dualx = 0, val = 0;
sc_err_t scierr = sc_misc_otp_fuse_read(-1, 6, &val);
if (scierr == SC_ERR_NONE) {
/* DX has two A35 cores disabled */
is_dualx = (val & 0xf) != 0x0;
}
*phys_sdram_1_start = PHYS_SDRAM_1;
if (is_dualx)
/* Our DX based SKUs only have 1 GB RAM */
*phys_sdram_1_size = SZ_1G;
else
*phys_sdram_1_size = PHYS_SDRAM_1_SIZE;
*phys_sdram_2_start = PHYS_SDRAM_2;
*phys_sdram_2_size = PHYS_SDRAM_2_SIZE;
}
int board_early_init_f(void)
{
sc_pm_clock_rate_t rate;
sc_err_t err = 0;
/*
* This works around that having only UART3 up the baudrate is 1.2M
* instead of 115.2k. Set UART0 clock root to 80 MHz
*/
rate = 80000000;
err = sc_pm_set_clock_rate(-1, SC_R_UART_0, SC_PM_CLK_PER, &rate);
if (err != SC_ERR_NONE)
return 0;
/* Set UART3 clock root to 80 MHz and enable it */
rate = SC_80MHZ;
err = sc_pm_setup_uart(SC_R_UART_1, rate);
if (err != SC_ERR_NONE)
return 0;
setup_iomux_uart();
return 0;
}
#if IS_ENABLED(CONFIG_DM_GPIO)
static void board_gpio_init(void)
{
/* TODO */
}
#else
static inline void board_gpio_init(void) {}
#endif
#if IS_ENABLED(CONFIG_FEC_MXC)
#include <miiphy.h>
int board_phy_config(struct phy_device *phydev)
{
if (phydev->drv->config)
phydev->drv->config(phydev);
return 0;
}
#endif
int checkboard(void)
{
puts("Model: Toradex Apalis iMX8X\n");
build_info();
print_bootinfo();
return 0;
}
int board_init(void)
{
board_gpio_init();
return 0;
}
/*
* Board specific reset that is system reset.
*/
void reset_cpu(void)
{
/* TODO */
}
#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
int ft_board_setup(void *blob, struct bd_info *bd)
{
return ft_common_board_setup(blob, bd);
}
#endif
int board_mmc_get_env_dev(int devno)
{
return devno;
}
int board_late_init(void)
{
#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
/* TODO move to common */
env_set("board_name", "Apalis iMX8X");
#endif
return 0;
}