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bus: uniphier-system-bus: move hardware init from board files 

Move the bus initialization code to this driver from board files.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Masahiro Yamada 2020-07-09 15:08:19 +09:00
parent e2bb0be2fc
commit 862274913f
11 changed files with 131 additions and 256 deletions
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36
arch/arm/mach-uniphier/board_init.c
View File

@ -13,6 +13,33 @@
#include "micro-support-card.h"
#include "soc-info.h"
#define PC0CTRL 0x598000c0
#if defined(CONFIG_ARCH_UNIPHIER_LD4) || defined(CONFIG_ARCH_UNIPHIER_SLD8)
static void uniphier_ld4_sbc_init(void)
{
u32 tmp;
/* system bus output enable */
tmp = readl(PC0CTRL);
tmp &= 0xfffffcff;
writel(tmp, PC0CTRL);
}
#endif
#if defined(CONFIG_ARCH_UNIPHIER_PXS2) || \
defined(CONFIG_ARCH_UNIPHIER_LD6B) || \
defined(CONFIG_ARCH_UNIPHIER_LD11) || \
defined(CONFIG_ARCH_UNIPHIER_LD20) || \
defined(CONFIG_ARCH_UNIPHIER_PXS3)
static void uniphier_pxs2_sbc_init(void)
{
/* necessary for ROM boot ?? */
/* system bus output enable */
writel(0x17, PC0CTRL);
}
#endif
#ifdef CONFIG_ARCH_UNIPHIER_LD20
static void uniphier_ld20_misc_init(void)
{
@ -45,7 +72,6 @@ static const struct uniphier_initdata uniphier_initdata[] = {
#if defined(CONFIG_ARCH_UNIPHIER_PRO4)
{
.soc_id = UNIPHIER_PRO4_ID,
.sbc_init = uniphier_sbc_init_savepin,
.pll_init = uniphier_pro4_pll_init,
.clk_init = uniphier_pro4_clk_init,
},
@ -60,7 +86,6 @@ static const struct uniphier_initdata uniphier_initdata[] = {
#if defined(CONFIG_ARCH_UNIPHIER_PRO5)
{
.soc_id = UNIPHIER_PRO5_ID,
.sbc_init = uniphier_sbc_init_savepin,
.clk_init = uniphier_pro5_clk_init,
},
#endif
@ -81,7 +106,7 @@ static const struct uniphier_initdata uniphier_initdata[] = {
#if defined(CONFIG_ARCH_UNIPHIER_LD11)
{
.soc_id = UNIPHIER_LD11_ID,
.sbc_init = uniphier_ld11_sbc_init,
.sbc_init = uniphier_pxs2_sbc_init,
.pll_init = uniphier_ld11_pll_init,
.clk_init = uniphier_ld11_clk_init,
},
@ -89,7 +114,7 @@ static const struct uniphier_initdata uniphier_initdata[] = {
#if defined(CONFIG_ARCH_UNIPHIER_LD20)
{
.soc_id = UNIPHIER_LD20_ID,
.sbc_init = uniphier_ld11_sbc_init,
.sbc_init = uniphier_pxs2_sbc_init,
.pll_init = uniphier_ld20_pll_init,
.clk_init = uniphier_ld20_clk_init,
.misc_init = uniphier_ld20_misc_init,
@ -118,7 +143,8 @@ int board_init(void)
return -EINVAL;
}
initdata->sbc_init();
if (initdata->sbc_init)
initdata->sbc_init();
support_card_init();

23
arch/arm/mach-uniphier/init.h
View File

@ -34,29 +34,6 @@ int uniphier_sld8_init(const struct uniphier_board_data *bd);
int uniphier_pro5_init(const struct uniphier_board_data *bd);
int uniphier_pxs2_init(const struct uniphier_board_data *bd);
#if defined(CONFIG_MICRO_SUPPORT_CARD)
void uniphier_sbc_init_savepin(void);
void uniphier_ld4_sbc_init(void);
void uniphier_pxs2_sbc_init(void);
void uniphier_ld11_sbc_init(void);
#else
static inline void uniphier_sbc_init_savepin(void)
{
}
static inline void uniphier_ld4_sbc_init(void)
{
}
static inline void uniphier_pxs2_sbc_init(void)
{
}
static inline void uniphier_ld11_sbc_init(void)
{
}
#endif
void uniphier_ld4_bcu_init(const struct uniphier_board_data *bd);
int uniphier_memconf_2ch_init(const struct uniphier_board_data *bd);

13
arch/arm/mach-uniphier/micro-support-card.c
View File

@ -5,7 +5,7 @@
* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
*/
#include <dm/of.h>
#include <dm.h>
#include <fdt_support.h>
#include <linux/ctype.h>
#include <linux/delay.h>
@ -90,6 +90,17 @@ static int support_card_show_revision(void)
void support_card_init(void)
{
struct udevice *dev;
int ret;
/* The system bus must be initialized for access to the support card. */
ret = uclass_get_device_by_driver(UCLASS_SIMPLE_BUS,
DM_GET_DRIVER(uniphier_system_bus_driver),
&dev);
if (ret)
return;
/* Check DT to see if this board has the support card. */
support_card_detect();
if (!support_card_found)

14
arch/arm/mach-uniphier/sbc/Makefile
View File

@ -1,17 +1,3 @@
# SPDX-License-Identifier: GPL-2.0+
obj-y += sbc-boot.o
ifndef CONFIG_SPL_BUILD
ifdef CONFIG_MICRO_SUPPORT_CARD
obj-y += sbc.o
obj-$(CONFIG_ARCH_UNIPHIER_LD4) += sbc-ld4.o
obj-$(CONFIG_ARCH_UNIPHIER_SLD8) += sbc-ld4.o
obj-$(CONFIG_ARCH_UNIPHIER_PXS2) += sbc-pxs2.o
obj-$(CONFIG_ARCH_UNIPHIER_LD6B) += sbc-pxs2.o
obj-$(CONFIG_ARCH_UNIPHIER_LD11) += sbc-ld11.o
obj-$(CONFIG_ARCH_UNIPHIER_LD20) += sbc-ld11.o
obj-$(CONFIG_ARCH_UNIPHIER_PXS3) += sbc-pxs2.o
endif
endif

3
arch/arm/mach-uniphier/sbc/sbc-boot.c
View File

@ -5,7 +5,8 @@
#include <linux/io.h>
#include "sbc-regs.h"
#define SBBASE0 0x58c00100
#define SBBASE_BANK_ENABLE (0x00000001)
int uniphier_sbc_boot_is_swapped(void)
{

26
arch/arm/mach-uniphier/sbc/sbc-ld11.c
View File

@ -1,26 +0,0 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2016-2017 Socionext Inc.
*/
#include <spl.h>
#include <linux/io.h>
#include "../init.h"
#include "sbc-regs.h"
void uniphier_ld11_sbc_init(void)
{
if (!uniphier_sbc_is_enabled())
return;
uniphier_sbc_init_savepin();
/* necessary for ROM boot ?? */
/* system bus output enable */
writel(0x17, PC0CTRL);
/* pins for NAND and System Bus are multiplexed */
if (spl_boot_device() != BOOT_DEVICE_NAND)
uniphier_pin_init("system-bus");
}

25
arch/arm/mach-uniphier/sbc/sbc-ld4.c
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@ -1,25 +0,0 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2011-2015 Panasonic Corporation
* Copyright (C) 2015-2017 Socionext Inc.
*/
#include <linux/io.h>
#include "../init.h"
#include "sbc-regs.h"
void uniphier_ld4_sbc_init(void)
{
u32 tmp;
if (!uniphier_sbc_is_enabled())
return;
uniphier_sbc_init_savepin();
/* system bus output enable */
tmp = readl(PC0CTRL);
tmp &= 0xfffffcff;
writel(tmp, PC0CTRL);
}

23
arch/arm/mach-uniphier/sbc/sbc-pxs2.c
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@ -1,23 +0,0 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2016-2017 Socionext Inc.
*/
#include <linux/io.h>
#include "../init.h"
#include "sbc-regs.h"
void uniphier_pxs2_sbc_init(void)
{
if (!uniphier_sbc_is_enabled())
return;
uniphier_sbc_init_savepin();
/* necessary for ROM boot ?? */
/* system bus output enable */
writel(0x17, PC0CTRL);
uniphier_pin_init("system-bus"); /* PXs3 */
}

68
arch/arm/mach-uniphier/sbc/sbc-regs.h
View File

@ -9,74 +9,6 @@
#ifndef ARCH_SBC_REGS_H
#define ARCH_SBC_REGS_H
#define SBBASE_BASE 0x58c00100
#define SBBASE(x) (SBBASE_BASE + (x) * 0x10)
#define SBBASE0 (SBBASE(0))
#define SBBASE1 (SBBASE(1))
#define SBBASE2 (SBBASE(2))
#define SBBASE3 (SBBASE(3))
#define SBBASE4 (SBBASE(4))
#define SBBASE5 (SBBASE(5))
#define SBBASE6 (SBBASE(6))
#define SBBASE7 (SBBASE(7))
#define SBBASE_BANK_ENABLE (0x00000001)
#define SBCTRL_BASE 0x58c00200
#define SBCTRL(x, y) (SBCTRL_BASE + (x) * 0x10 + (y) * 4)
#define SBCTRL00 SBCTRL(0, 0)
#define SBCTRL01 SBCTRL(0, 1)
#define SBCTRL02 SBCTRL(0, 2)
#define SBCTRL03 SBCTRL(0, 3)
#define SBCTRL04 (SBCTRL_BASE + 0x100)
#define SBCTRL10 SBCTRL(1, 0)
#define SBCTRL11 SBCTRL(1, 1)
#define SBCTRL12 SBCTRL(1, 2)
#define SBCTRL13 SBCTRL(1, 3)
#define SBCTRL14 (SBCTRL_BASE + 0x110)
#define SBCTRL20 SBCTRL(2, 0)
#define SBCTRL21 SBCTRL(2, 1)
#define SBCTRL22 SBCTRL(2, 2)
#define SBCTRL23 SBCTRL(2, 3)
#define SBCTRL24 (SBCTRL_BASE + 0x120)
#define SBCTRL30 SBCTRL(3, 0)
#define SBCTRL31 SBCTRL(3, 1)
#define SBCTRL32 SBCTRL(3, 2)
#define SBCTRL33 SBCTRL(3, 3)
#define SBCTRL34 (SBCTRL_BASE + 0x130)
#define SBCTRL40 SBCTRL(4, 0)
#define SBCTRL41 SBCTRL(4, 1)
#define SBCTRL42 SBCTRL(4, 2)
#define SBCTRL43 SBCTRL(4, 3)
#define SBCTRL44 (SBCTRL_BASE + 0x140)
#define SBCTRL50 SBCTRL(5, 0)
#define SBCTRL51 SBCTRL(5, 1)
#define SBCTRL52 SBCTRL(5, 2)
#define SBCTRL53 SBCTRL(5, 3)
#define SBCTRL54 (SBCTRL_BASE + 0x150)
#define SBCTRL60 SBCTRL(6, 0)
#define SBCTRL61 SBCTRL(6, 1)
#define SBCTRL62 SBCTRL(6, 2)
#define SBCTRL63 SBCTRL(6, 3)
#define SBCTRL64 (SBCTRL_BASE + 0x160)
#define SBCTRL70 SBCTRL(7, 0)
#define SBCTRL71 SBCTRL(7, 1)
#define SBCTRL72 SBCTRL(7, 2)
#define SBCTRL73 SBCTRL(7, 3)
#define SBCTRL74 (SBCTRL_BASE + 0x170)
#define PC0CTRL 0x598000c0
int uniphier_sbc_boot_is_swapped(void);
int uniphier_sbc_is_enabled(void);
#endif /* ARCH_SBC_REGS_H */

70
arch/arm/mach-uniphier/sbc/sbc.c
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@ -1,70 +0,0 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2011-2015 Panasonic Corporation
* Copyright (C) 2015-2017 Socionext Inc.
* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
*/
#include <linux/io.h>
#include <asm/global_data.h>
#include "../init.h"
#include "sbc-regs.h"
/* slower but LED works */
#define SBCTRL0_SAVEPIN_PERI_VALUE 0x55450000
#define SBCTRL1_SAVEPIN_PERI_VALUE 0x07168d00
#define SBCTRL2_SAVEPIN_PERI_VALUE 0x34000009
#define SBCTRL4_SAVEPIN_PERI_VALUE 0x02110110
/* faster but LED does not work */
#define SBCTRL0_SAVEPIN_MEM_VALUE 0x55450000
#define SBCTRL1_SAVEPIN_MEM_VALUE 0x06057700
#define SBCTRL2_SAVEPIN_MEM_VALUE 0x34000009
#define SBCTRL4_SAVEPIN_MEM_VALUE 0x02110210
int uniphier_sbc_is_enabled(void)
{
DECLARE_GLOBAL_DATA_PTR;
const void *fdt = gd->fdt_blob;
int offset;
offset = fdt_node_offset_by_compatible(fdt, 0,
"socionext,uniphier-system-bus");
if (offset < 0)
return 0;
return fdtdec_get_is_enabled(fdt, offset);
}
void uniphier_sbc_init_savepin(void)
{
/*
* Only CS1 is connected to support card.
* BKSZ[1:0] should be set to "01".
*/
writel(SBCTRL0_SAVEPIN_PERI_VALUE, SBCTRL10);
writel(SBCTRL1_SAVEPIN_PERI_VALUE, SBCTRL11);
writel(SBCTRL2_SAVEPIN_PERI_VALUE, SBCTRL12);
writel(SBCTRL4_SAVEPIN_PERI_VALUE, SBCTRL14);
if (uniphier_sbc_boot_is_swapped()) {
/*
* Boot Swap On: boot from external NOR/SRAM
* 0x42000000-0x43ffffff is a mirror of 0x40000000-0x41ffffff.
*
* 0x40000000-0x41efffff, 0x42000000-0x43efffff: memory bank
* 0x41f00000-0x41ffffff, 0x43f00000-0x43ffffff: peripherals
*/
writel(0x0000bc01, SBBASE0);
} else {
/*
* Boot Swap Off: boot from mask ROM
* 0x40000000-0x41ffffff: mask ROM
* 0x42000000-0x43efffff: memory bank (31MB)
* 0x43f00000-0x43ffffff: peripherals (1MB)
*/
writel(0x0000be01, SBBASE0); /* dummy */
writel(0x0200be01, SBBASE1);
}
}

86
drivers/bus/uniphier-system-bus.c
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@ -1,7 +1,92 @@
// SPDX-License-Identifier: GPL-2.0-or-later
#include <linux/bitops.h>
#include <linux/errno.h>
#include <linux/io.h>
#include <linux/sizes.h>
#include <linux/types.h>
#include <dm.h>
/* System Bus Controller registers */
#define UNIPHIER_SBC_BASE 0x100 /* base address of bank0 space */
#define UNIPHIER_SBC_BASE_BE BIT(0) /* bank_enable */
#define UNIPHIER_SBC_CTRL0 0x200 /* timing parameter 0 of bank0 */
#define UNIPHIER_SBC_CTRL1 0x204 /* timing parameter 1 of bank0 */
#define UNIPHIER_SBC_CTRL2 0x208 /* timing parameter 2 of bank0 */
#define UNIPHIER_SBC_CTRL3 0x20c /* timing parameter 3 of bank0 */
#define UNIPHIER_SBC_CTRL4 0x300 /* timing parameter 4 of bank0 */
#define UNIPHIER_SBC_STRIDE 0x10 /* register stride to next bank */
#if 1
/* slower but LED works */
#define SBCTRL0_VALUE 0x55450000
#define SBCTRL1_VALUE 0x07168d00
#define SBCTRL2_VALUE 0x34000009
#define SBCTRL4_VALUE 0x02110110
#else
/* faster but LED does not work */
#define SBCTRL0_VALUE 0x55450000
#define SBCTRL1_VALUE 0x06057700
/* NOR flash needs more wait counts than SRAM */
#define SBCTRL2_VALUE 0x34000009
#define SBCTRL4_VALUE 0x02110210
#endif
void uniphier_system_bus_set_reg(void __iomem *membase)
{
void __iomem *bank0_base = membase;
void __iomem *bank1_base = membase + UNIPHIER_SBC_STRIDE;
/*
* Only CS1 is connected to support card.
* BKSZ[1:0] should be set to "01".
*/
writel(SBCTRL0_VALUE, bank1_base + UNIPHIER_SBC_CTRL0);
writel(SBCTRL1_VALUE, bank1_base + UNIPHIER_SBC_CTRL1);
writel(SBCTRL2_VALUE, bank1_base + UNIPHIER_SBC_CTRL2);
writel(SBCTRL4_VALUE, bank1_base + UNIPHIER_SBC_CTRL4);
if (readl(bank1_base + UNIPHIER_SBC_BASE) & UNIPHIER_SBC_BASE_BE) {
/*
* Boot Swap On: boot from external NOR/SRAM
* 0x42000000-0x43ffffff is a mirror of 0x40000000-0x41ffffff.
*
* 0x40000000-0x41efffff, 0x42000000-0x43efffff: memory bank
* 0x41f00000-0x41ffffff, 0x43f00000-0x43ffffff: peripherals
*/
writel(0x0000bc01, bank0_base + UNIPHIER_SBC_BASE);
} else {
/*
* Boot Swap Off: boot from mask ROM
* 0x40000000-0x41ffffff: mask ROM
* 0x42000000-0x43efffff: memory bank (31MB)
* 0x43f00000-0x43ffffff: peripherals (1MB)
*/
writel(0x0000be01, bank0_base + UNIPHIER_SBC_BASE); /* dummy */
writel(0x0200be01, bank0_base + UNIPHIER_SBC_BASE);
}
}
static int uniphier_system_bus_probe(struct udevice *dev)
{
fdt_addr_t base;
void __iomem *membase;
base = dev_read_addr(dev);
if (base == FDT_ADDR_T_NONE)
return -EINVAL;
membase = devm_ioremap(dev, base, SZ_1K);
if (!membase)
return -ENOMEM;
uniphier_system_bus_set_reg(membase);
return 0;
}
static const struct udevice_id uniphier_system_bus_match[] = {
{ .compatible = "socionext,uniphier-system-bus" },
{ /* sentinel */ }
@ -11,4 +96,5 @@ U_BOOT_DRIVER(uniphier_system_bus_driver) = {
.name = "uniphier-system-bus",
.id = UCLASS_SIMPLE_BUS,
.of_match = uniphier_system_bus_match,
.probe = uniphier_system_bus_probe,
};