mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-18 10:48:51 +00:00
35b65dd8ef
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>
81 lines
1.9 KiB
C
81 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* board/renesas/draak/draak.c
|
|
* This file is Draak board support.
|
|
*
|
|
* Copyright (C) 2017 Marek Vasut <marek.vasut+renesas@gmail.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <cpu_func.h>
|
|
#include <hang.h>
|
|
#include <init.h>
|
|
#include <malloc.h>
|
|
#include <netdev.h>
|
|
#include <dm.h>
|
|
#include <asm/global_data.h>
|
|
#include <dm/platform_data/serial_sh.h>
|
|
#include <asm/processor.h>
|
|
#include <asm/mach-types.h>
|
|
#include <asm/io.h>
|
|
#include <linux/bitops.h>
|
|
#include <linux/errno.h>
|
|
#include <asm/arch/sys_proto.h>
|
|
#include <asm/gpio.h>
|
|
#include <asm/arch/gpio.h>
|
|
#include <asm/arch/rmobile.h>
|
|
#include <asm/arch/rcar-mstp.h>
|
|
#include <asm/arch/sh_sdhi.h>
|
|
#include <i2c.h>
|
|
#include <mmc.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
#define GSX_MSTP112 BIT(12) /* 3DG */
|
|
#define SCIF2_MSTP310 BIT(10) /* SCIF2 */
|
|
#define DVFS_MSTP926 BIT(26)
|
|
#define HSUSB_MSTP704 BIT(4) /* HSUSB */
|
|
|
|
int board_early_init_f(void)
|
|
{
|
|
#if defined(CONFIG_SYS_I2C) && defined(CONFIG_SYS_I2C_SH)
|
|
/* DVFS for reset */
|
|
mstp_clrbits_le32(SMSTPCR9, SMSTPCR9, DVFS_MSTP926);
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
/* HSUSB block registers */
|
|
#define HSUSB_REG_LPSTS 0xE6590102
|
|
#define HSUSB_REG_LPSTS_SUSPM_NORMAL BIT(14)
|
|
#define HSUSB_REG_UGCTRL2 0xE6590184
|
|
#define HSUSB_REG_UGCTRL2_USB0SEL 0x30
|
|
#define HSUSB_REG_UGCTRL2_USB0SEL_EHCI 0x10
|
|
|
|
int board_init(void)
|
|
{
|
|
/* adress of boot parameters */
|
|
gd->bd->bi_boot_params = CONFIG_SYS_TEXT_BASE + 0x50000;
|
|
|
|
/* USB1 pull-up */
|
|
setbits_le32(PFC_PUEN6, PUEN_USB1_OVC | PUEN_USB1_PWEN);
|
|
|
|
/* Configure the HSUSB block */
|
|
mstp_clrbits_le32(SMSTPCR7, SMSTPCR7, HSUSB_MSTP704);
|
|
/* Choice USB0SEL */
|
|
clrsetbits_le32(HSUSB_REG_UGCTRL2, HSUSB_REG_UGCTRL2_USB0SEL,
|
|
HSUSB_REG_UGCTRL2_USB0SEL_EHCI);
|
|
/* low power status */
|
|
setbits_le16(HSUSB_REG_LPSTS, HSUSB_REG_LPSTS_SUSPM_NORMAL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define RST_BASE 0xE6160000
|
|
#define RST_CA53RESCNT (RST_BASE + 0x44)
|
|
#define RST_CA53_CODE 0x5A5A000F
|
|
|
|
void reset_cpu(void)
|
|
{
|
|
writel(RST_CA53_CODE, RST_CA53RESCNT);
|
|
}
|