diff options
Diffstat (limited to 'roms/u-boot/arch/arm/mach-uniphier/debug-uart')
9 files changed, 299 insertions, 0 deletions
diff --git a/roms/u-boot/arch/arm/mach-uniphier/debug-uart/Makefile b/roms/u-boot/arch/arm/mach-uniphier/debug-uart/Makefile new file mode 100644 index 000000000..81e9314a5 --- /dev/null +++ b/roms/u-boot/arch/arm/mach-uniphier/debug-uart/Makefile @@ -0,0 +1,12 @@ +# SPDX-License-Identifier: GPL-2.0+ + +ifdef CONFIG_SPL_BUILD +obj-$(CONFIG_ARCH_UNIPHIER_LD4) += debug-uart-ld4.o +obj-$(CONFIG_ARCH_UNIPHIER_PRO4) += debug-uart-pro4.o +obj-$(CONFIG_ARCH_UNIPHIER_SLD8) += debug-uart-sld8.o +obj-$(CONFIG_ARCH_UNIPHIER_PRO5) += debug-uart-pro5.o +obj-$(CONFIG_ARCH_UNIPHIER_PXS2) += debug-uart-pxs2.o +obj-$(CONFIG_ARCH_UNIPHIER_LD6B) += debug-uart-ld6b.o +endif + +obj-y += debug-uart.o diff --git a/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-ld4.c b/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-ld4.c new file mode 100644 index 000000000..10a7087c0 --- /dev/null +++ b/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-ld4.c @@ -0,0 +1,20 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2016 Masahiro Yamada <yamada.masahiro@socionext.com> + */ + +#include <config.h> +#include <linux/kernel.h> + +#include "../sg-regs.h" +#include "debug-uart.h" + +#define UNIPHIER_LD4_UART_CLK 36864000 + +unsigned int uniphier_ld4_debug_uart_init(void) +{ + sg_set_iectrl(0); + sg_set_pinsel(88, 1, 8, 4); /* HSDOUT6 -> TXD0 */ + + return DIV_ROUND_CLOSEST(UNIPHIER_LD4_UART_CLK, 16 * CONFIG_BAUDRATE); +} diff --git a/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-ld6b.c b/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-ld6b.c new file mode 100644 index 000000000..f64ff39c9 --- /dev/null +++ b/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-ld6b.c @@ -0,0 +1,30 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2016 Masahiro Yamada <yamada.masahiro@socionext.com> + */ + +#include <config.h> +#include <linux/kernel.h> +#include <linux/io.h> + +#include "../sc-regs.h" +#include "../sg-regs.h" +#include "debug-uart.h" + +#define UNIPHIER_LD6B_UART_CLK 88888888 + +unsigned int uniphier_ld6b_debug_uart_init(void) +{ + u32 tmp; + + sg_set_iectrl(0); + sg_set_pinsel(135, 3, 8, 4); /* PORT10 -> TXD0 */ + sg_set_pinsel(115, 0, 8, 4); /* TXD1 -> TXD1 */ + sg_set_pinsel(113, 2, 8, 4); /* SBO0 -> TXD2 */ + + tmp = readl(sc_base + SC_CLKCTRL); + tmp |= SC_CLKCTRL_CEN_PERI; + writel(tmp, sc_base + SC_CLKCTRL); + + return DIV_ROUND_CLOSEST(UNIPHIER_LD6B_UART_CLK, 16 * CONFIG_BAUDRATE); +} diff --git a/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-pro4.c b/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-pro4.c new file mode 100644 index 000000000..79c6c101e --- /dev/null +++ b/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-pro4.c @@ -0,0 +1,30 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2016 Masahiro Yamada <yamada.masahiro@socionext.com> + */ + +#include <config.h> +#include <linux/kernel.h> +#include <linux/io.h> + +#include "../sc-regs.h" +#include "../sg-regs.h" +#include "debug-uart.h" + +#define UNIPHIER_PRO4_UART_CLK 73728000 + +unsigned int uniphier_pro4_debug_uart_init(void) +{ + u32 tmp; + + sg_set_iectrl(0); + sg_set_pinsel(128, 0, 4, 8); /* TXD0 -> TXD0 */ + + writel(1, sg_base + SG_LOADPINCTRL); + + tmp = readl(sc_base + SC_CLKCTRL); + tmp |= SC_CLKCTRL_CEN_PERI; + writel(tmp, sc_base + SC_CLKCTRL); + + return DIV_ROUND_CLOSEST(UNIPHIER_PRO4_UART_CLK, 16 * CONFIG_BAUDRATE); +} diff --git a/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-pro5.c b/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-pro5.c new file mode 100644 index 000000000..ef3b383ee --- /dev/null +++ b/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-pro5.c @@ -0,0 +1,33 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2016 Masahiro Yamada <yamada.masahiro@socionext.com> + */ + +#include <config.h> +#include <linux/kernel.h> +#include <linux/io.h> + +#include "../sc-regs.h" +#include "../sg-regs.h" +#include "debug-uart.h" + +#define UNIPHIER_PRO5_UART_CLK 73728000 + +unsigned int uniphier_pro5_debug_uart_init(void) +{ + u32 tmp; + + sg_set_iectrl(0); + sg_set_pinsel(47, 0, 4, 8); /* TXD0 -> TXD0 */ + sg_set_pinsel(49, 0, 4, 8); /* TXD1 -> TXD1 */ + sg_set_pinsel(51, 0, 4, 8); /* TXD2 -> TXD2 */ + sg_set_pinsel(53, 0, 4, 8); /* TXD3 -> TXD3 */ + + writel(1, sg_base + SG_LOADPINCTRL); + + tmp = readl(sc_base + SC_CLKCTRL); + tmp |= SC_CLKCTRL_CEN_PERI; + writel(tmp, sc_base + SC_CLKCTRL); + + return DIV_ROUND_CLOSEST(UNIPHIER_PRO5_UART_CLK, 16 * CONFIG_BAUDRATE); +} diff --git a/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-pxs2.c b/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-pxs2.c new file mode 100644 index 000000000..ee8caad1d --- /dev/null +++ b/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-pxs2.c @@ -0,0 +1,31 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2016 Masahiro Yamada <yamada.masahiro@socionext.com> + */ + +#include <config.h> +#include <linux/kernel.h> +#include <linux/io.h> + +#include "../sc-regs.h" +#include "../sg-regs.h" +#include "debug-uart.h" + +#define UNIPHIER_PXS2_UART_CLK 88888888 + +unsigned int uniphier_pxs2_debug_uart_init(void) +{ + u32 tmp; + + sg_set_iectrl(0); + sg_set_pinsel(217, 8, 8, 4); /* TXD0 -> TXD0 */ + sg_set_pinsel(115, 8, 8, 4); /* TXD1 -> TXD1 */ + sg_set_pinsel(113, 8, 8, 4); /* TXD2 -> TXD2 */ + sg_set_pinsel(219, 8, 8, 4); /* TXD3 -> TXD3 */ + + tmp = readl(sc_base + SC_CLKCTRL); + tmp |= SC_CLKCTRL_CEN_PERI; + writel(tmp, sc_base + SC_CLKCTRL); + + return DIV_ROUND_CLOSEST(UNIPHIER_PXS2_UART_CLK, 16 * CONFIG_BAUDRATE); +} diff --git a/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-sld8.c b/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-sld8.c new file mode 100644 index 000000000..da16abdba --- /dev/null +++ b/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart-sld8.c @@ -0,0 +1,20 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2016 Masahiro Yamada <yamada.masahiro@socionext.com> + */ + +#include <config.h> +#include <linux/kernel.h> + +#include "../sg-regs.h" +#include "debug-uart.h" + +#define UNIPHIER_SLD8_UART_CLK 80000000 + +unsigned int uniphier_sld8_debug_uart_init(void) +{ + sg_set_iectrl(0); + sg_set_pinsel(70, 3, 8, 4); /* HSDOUT6 -> TXD0 */ + + return DIV_ROUND_CLOSEST(UNIPHIER_SLD8_UART_CLK, 16 * CONFIG_BAUDRATE); +} diff --git a/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart.c b/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart.c new file mode 100644 index 000000000..d116d4681 --- /dev/null +++ b/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart.c @@ -0,0 +1,103 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2016 Masahiro Yamada <yamada.masahiro@socionext.com> + */ + +#include <debug_uart.h> +#include <linux/io.h> +#include <linux/serial_reg.h> + +#include "../sg-regs.h" +#include "../soc-info.h" +#include "debug-uart.h" + +#define UNIPHIER_UART_TX 0x00 +#define UNIPHIER_UART_LCR_MCR 0x10 +#define UNIPHIER_UART_LSR 0x14 +#define UNIPHIER_UART_LDR 0x24 + +static void _debug_uart_putc(int c) +{ + void __iomem *base = (void __iomem *)CONFIG_DEBUG_UART_BASE; + + while (!(readl(base + UNIPHIER_UART_LSR) & UART_LSR_THRE)) + ; + + writel(c, base + UNIPHIER_UART_TX); +} + +#ifdef CONFIG_SPL_BUILD +void sg_set_pinsel(unsigned int pin, unsigned int muxval, + unsigned int mux_bits, unsigned int reg_stride) +{ + unsigned int shift = pin * mux_bits % 32; + void __iomem *reg = sg_base + SG_PINCTRL_BASE + + pin * mux_bits / 32 * reg_stride; + u32 mask = (1U << mux_bits) - 1; + u32 tmp; + + tmp = readl(reg); + tmp &= ~(mask << shift); + tmp |= (mask & muxval) << shift; + writel(tmp, reg); +} + +void sg_set_iectrl(unsigned int pin) +{ + unsigned int bit = pin % 32; + void __iomem *reg = sg_base + SG_IECTRL + pin / 32 * 4; + u32 tmp; + + tmp = readl(reg); + tmp |= 1 << bit; + writel(tmp, reg); +} +#endif + +void _debug_uart_init(void) +{ +#ifdef CONFIG_SPL_BUILD + void __iomem *base = (void __iomem *)CONFIG_DEBUG_UART_BASE; + unsigned int divisor; + + switch (uniphier_get_soc_id()) { +#if defined(CONFIG_ARCH_UNIPHIER_LD4) + case UNIPHIER_LD4_ID: + divisor = uniphier_ld4_debug_uart_init(); + break; +#endif +#if defined(CONFIG_ARCH_UNIPHIER_PRO4) + case UNIPHIER_PRO4_ID: + divisor = uniphier_pro4_debug_uart_init(); + break; +#endif +#if defined(CONFIG_ARCH_UNIPHIER_SLD8) + case UNIPHIER_SLD8_ID: + divisor = uniphier_sld8_debug_uart_init(); + break; +#endif +#if defined(CONFIG_ARCH_UNIPHIER_PRO5) + case UNIPHIER_PRO5_ID: + divisor = uniphier_pro5_debug_uart_init(); + break; +#endif +#if defined(CONFIG_ARCH_UNIPHIER_PXS2) + case UNIPHIER_PXS2_ID: + divisor = uniphier_pxs2_debug_uart_init(); + break; +#endif +#if defined(CONFIG_ARCH_UNIPHIER_LD6B) + case UNIPHIER_LD6B_ID: + divisor = uniphier_ld6b_debug_uart_init(); + break; +#endif + default: + return; + } + + writel(UART_LCR_WLEN8 << 8, base + UNIPHIER_UART_LCR_MCR); + + writel(divisor, base + UNIPHIER_UART_LDR); +#endif +} +DEBUG_UART_FUNCS diff --git a/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart.h b/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart.h new file mode 100644 index 000000000..f4e98c0bb --- /dev/null +++ b/roms/u-boot/arch/arm/mach-uniphier/debug-uart/debug-uart.h @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (C) 2016 Masahiro Yamada <yamada.masahiro@socionext.com> + */ + +#ifndef _MACH_DEBUG_UART_H +#define _MACH_DEBUG_UART_H + +unsigned int uniphier_ld4_debug_uart_init(void); +unsigned int uniphier_pro4_debug_uart_init(void); +unsigned int uniphier_sld8_debug_uart_init(void); +unsigned int uniphier_pro5_debug_uart_init(void); +unsigned int uniphier_pxs2_debug_uart_init(void); +unsigned int uniphier_ld6b_debug_uart_init(void); + +void sg_set_pinsel(unsigned int pin, unsigned int muxval, + unsigned int mux_bits, unsigned int reg_stride); +void sg_set_iectrl(unsigned int pin); + +#endif /* _MACH_DEBUG_UART_H */ |