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Mon, 23 May 2022 23:04:21 -0700 (PDT) Received: from shc.milas.spb.ru ([188.243.217.78]) by smtp.gmail.com with ESMTPSA id 4-20020ac24824000000b0047255d211c8sm2346461lft.247.2022.05.23.23.04.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 May 2022 23:04:20 -0700 (PDT) From: Alexander Shiyan To: barebox@lists.infradead.org Cc: Alexander Shiyan Date: Tue, 24 May 2022 09:04:11 +0300 Message-Id: <20220524060411.7754-1-eagle.alexander923@gmail.com> X-Mailer: git-send-email 2.32.0 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220523_230434_881838_36642802 X-CRM114-Status: GOOD ( 27.04 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-3.5 required=4.0 tests=AWL,BAYES_00, DKIM_ADSP_CUSTOM_MED,DKIM_SIGNED,DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_NONE,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH v2] ARM: clps711x: Switch to devicetree usage X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.ext.pengutronix.de) This is a complex patch that switches the ARM CLPS711X architecture to work with the device tree. Includes changes to board initialization and any architecture drivers used. Signed-off-by: Alexander Shiyan --- arch/arm/Kconfig | 4 + arch/arm/boards/clep7212/Makefile | 4 +- arch/arm/boards/clep7212/board.c | 15 ++ arch/arm/boards/clep7212/clep7212.c | 57 ------- arch/arm/boards/clep7212/lowlevel.c | 23 ++- arch/arm/configs/clps711x_defconfig | 5 +- arch/arm/dts/Makefile | 1 + arch/arm/dts/ep7212-clep7212.dts | 64 ++++++++ arch/arm/mach-clps711x/Kconfig | 9 -- arch/arm/mach-clps711x/Makefile | 2 +- arch/arm/mach-clps711x/clock.c | 46 +++--- arch/arm/mach-clps711x/common.c | 149 ++++++++++++++++++ .../arm/mach-clps711x/include/mach/clps711x.h | 28 ++-- .../arm/mach-clps711x/include/mach/debug_ll.h | 21 +++ arch/arm/mach-clps711x/include/mach/devices.h | 9 -- arch/arm/mach-clps711x/lowlevel.c | 72 +++++---- arch/arm/mach-clps711x/reset.c | 29 ---- drivers/clocksource/clps711x.c | 7 +- drivers/gpio/gpio-clps711x.c | 7 +- drivers/serial/serial_clps711x.c | 57 ++++--- images/Makefile | 1 + images/Makefile.clps711x | 8 + 22 files changed, 395 insertions(+), 223 deletions(-) create mode 100644 arch/arm/boards/clep7212/board.c delete mode 100644 arch/arm/boards/clep7212/clep7212.c create mode 100644 arch/arm/dts/ep7212-clep7212.dts create mode 100644 arch/arm/mach-clps711x/common.c create mode 100644 arch/arm/mach-clps711x/include/mach/debug_ll.h delete mode 100644 arch/arm/mach-clps711x/include/mach/devices.h delete mode 100644 arch/arm/mach-clps711x/reset.c create mode 100644 images/Makefile.clps711x diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 299e0ab080..8a1d75c19b 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -66,9 +66,13 @@ config ARCH_CLPS711X select CLKDEV_LOOKUP select CLOCKSOURCE_CLPS711X select COMMON_CLK + select COMMON_CLK_OF_PROVIDER select CPU_32v4T select GPIOLIB + select HAS_DEBUG_LL + select HAVE_PBL_MULTI_IMAGES select MFD_SYSCON + select RELOCATABLE config ARCH_DAVINCI bool "TI Davinci" diff --git a/arch/arm/boards/clep7212/Makefile b/arch/arm/boards/clep7212/Makefile index 096120e567..85d92c8a7f 100644 --- a/arch/arm/boards/clep7212/Makefile +++ b/arch/arm/boards/clep7212/Makefile @@ -1,5 +1,5 @@ # SPDX-License-Identifier: GPL-2.0-only -obj-y += clep7212.o +obj-y += board.o lwl-y += lowlevel.o -bbenv-y += defaultenv-clep7212 +bbenv-$(CONFIG_DEFAULT_ENVIRONMENT) += defaultenv-clep7212 diff --git a/arch/arm/boards/clep7212/board.c b/arch/arm/boards/clep7212/board.c new file mode 100644 index 0000000000..b3983f2f49 --- /dev/null +++ b/arch/arm/boards/clep7212/board.c @@ -0,0 +1,15 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +// SPDX-FileCopyrightText: Alexander Shiyan + +#include +#include +#include + +static __init int clep7212_init(void) +{ + if (of_machine_is_compatible("cirrus,clep7212")) + defaultenv_append_directory(defaultenv_clep7212); + + return 0; +} +device_initcall(clep7212_init); diff --git a/arch/arm/boards/clep7212/clep7212.c b/arch/arm/boards/clep7212/clep7212.c deleted file mode 100644 index 3b497a6bd2..0000000000 --- a/arch/arm/boards/clep7212/clep7212.c +++ /dev/null @@ -1,57 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -// SPDX-FileCopyrightText: 2012 Alexander Shiyan - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include - -static int clps711x_devices_init(void) -{ - u32 serial_h = 0, serial_l = readl(UNIQID); - void *cfi_io; - - /* Setup Chipselects */ - clps711x_setup_memcfg(0, MEMCFG_WAITSTATE_6_1 | MEMCFG_BUS_WIDTH_16); - clps711x_setup_memcfg(1, MEMCFG_WAITSTATE_6_1 | MEMCFG_BUS_WIDTH_8); - clps711x_setup_memcfg(2, MEMCFG_WAITSTATE_8_3 | MEMCFG_BUS_WIDTH_16 | - MEMCFG_CLKENB); - clps711x_setup_memcfg(3, MEMCFG_WAITSTATE_7_1 | MEMCFG_BUS_WIDTH_32); - - cfi_io = map_io_sections(CS0_BASE, (void *)0x90000000, SZ_32M); - add_cfi_flash_device(DEVICE_ID_DYNAMIC, (unsigned long)cfi_io, SZ_32M, - IORESOURCE_MEM); - - devfs_add_partition("nor0", 0x00000, SZ_512K, DEVFS_PARTITION_FIXED, - "self0"); - devfs_add_partition("nor0", SZ_256K, SZ_256K, DEVFS_PARTITION_FIXED, - "env0"); - - armlinux_set_architecture(MACH_TYPE_CLEP7212); - armlinux_set_serial(((u64)serial_h << 32) | serial_l); - - defaultenv_append_directory(defaultenv_clep7212); - - return 0; -} -device_initcall(clps711x_devices_init); - -static int clps711x_console_init(void) -{ - barebox_set_model("Cirrus Logic CLEP7212"); - barebox_set_hostname("clep7212"); - - clps711x_add_uart(0); - - return 0; -} -console_initcall(clps711x_console_init); diff --git a/arch/arm/boards/clep7212/lowlevel.c b/arch/arm/boards/clep7212/lowlevel.c index 41827dfa16..09f2762fac 100644 --- a/arch/arm/boards/clep7212/lowlevel.c +++ b/arch/arm/boards/clep7212/lowlevel.c @@ -1,22 +1,21 @@ // SPDX-License-Identifier: GPL-2.0-or-later -// SPDX-FileCopyrightText: 2012 Alexander Shiyan +// SPDX-FileCopyrightText: Alexander Shiyan #include -#include - -#include - +#include +#include #include -#ifdef CONFIG_CLPS711X_RAISE_CPUFREQ -# define CLPS711X_CPU_PLL_MULT 50 -#else -# define CLPS711X_CPU_PLL_MULT 40 -#endif +extern char __dtb_ep7212_clep7212_start[]; -void __naked __bare_init barebox_arm_reset_vector(uint32_t r0, uint32_t r1, uint32_t r2) +ENTRY_FUNCTION_WITHSTACK(start_ep7212_clep7212, + CS6_BASE + 48 * SZ_1K, r0, r1, r2) { + void *fdt; + arm_cpu_lowlevel_init(); - clps711x_barebox_entry(CLPS711X_CPU_PLL_MULT, NULL); + fdt = __dtb_ep7212_clep7212_start; + + clps711x_start(fdt + get_runtime_offset()); } diff --git a/arch/arm/configs/clps711x_defconfig b/arch/arm/configs/clps711x_defconfig index d9eab565b9..684ae79e22 100644 --- a/arch/arm/configs/clps711x_defconfig +++ b/arch/arm/configs/clps711x_defconfig @@ -1,8 +1,8 @@ CONFIG_ARCH_CLPS711X=y +CONFIG_CLPS711X_RAISE_CPUFREQ=y CONFIG_AEABI=y CONFIG_ARM_OPTIMZED_STRING_FUNCTIONS=y # CONFIG_MEMINFO is not set -CONFIG_PBL_IMAGE=y CONFIG_MMU=y CONFIG_EXPERIMENTAL=y CONFIG_BAUDRATE=57600 @@ -28,6 +28,8 @@ CONFIG_CMD_TIMEOUT=y CONFIG_CMD_CRC=y CONFIG_CMD_CRC_CMP=y CONFIG_CMD_FLASH=y +CONFIG_OFDEVICE=y +CONFIG_OF_BAREBOX_DRIVERS=y # CONFIG_SPI is not set CONFIG_MTD=y CONFIG_DRIVER_CFI=y @@ -36,6 +38,7 @@ CONFIG_DRIVER_CFI=y CONFIG_DISK=y CONFIG_DISK_WRITE=y CONFIG_DISK_INTF_PLATFORM_IDE=y +# CONFIG_PINCTRL is not set CONFIG_FS_CRAMFS=y CONFIG_FS_FAT=y CONFIG_FS_FAT_LFN=y diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile index 46e5e67672..d67d10bde8 100644 --- a/arch/arm/dts/Makefile +++ b/arch/arm/dts/Makefile @@ -8,6 +8,7 @@ lwl-$(CONFIG_MACH_ADVANTECH_ROM_742X) += imx6dl-advantech-rom-7421.dtb.o lwl-$(CONFIG_MACH_AFI_GF) += am335x-afi-gf.dtb.o lwl-$(CONFIG_MACH_BEAGLEBONE) += am335x-bone.dtb.o am335x-boneblack.dtb.o am335x-bone-common.dtb.o lwl-$(CONFIG_MACH_CANON_A1100) += canon-a1100.dtb.o +lwl-$(CONFIG_MACH_CLEP7212) += ep7212-clep7212.dtb.o lwl-$(CONFIG_MACH_CM_FX6) += imx6dl-cm-fx6.dtb.o imx6q-cm-fx6.dtb.o imx6q-utilite.dtb.o lwl-$(CONFIG_MACH_DFI_FS700_M60) += imx6q-dfi-fs700-m60-6q.dtb.o imx6dl-dfi-fs700-m60-6s.dtb.o lwl-$(CONFIG_MACH_DUCKBILL) += imx28-duckbill.dtb.o diff --git a/arch/arm/dts/ep7212-clep7212.dts b/arch/arm/dts/ep7212-clep7212.dts new file mode 100644 index 0000000000..84c5e79548 --- /dev/null +++ b/arch/arm/dts/ep7212-clep7212.dts @@ -0,0 +1,64 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* Author: Alexander Shiyan */ + +#include + +/ { + model = "Cirrus Logic EP7212"; + compatible = "cirrus,clep7212", "cirrus,ep7212", "cirrus,ep7209"; + + memory@c0000000 { + device_type = "memory"; + reg = <0xc0000000 0x02000000>; + }; + + chosen { + stdout-path = &uart1; + + environment { + compatible = "barebox,environment"; + device-path = &flash, "partname:env"; + }; + }; +}; + +&bus { + /* Setup Memory Timings */ + /* CS0 = WAITSTATE_6_1 | BUS_WIDTH_16 */ + /* CS1 = WAITSTATE_6_1 | BUS_WIDTH_8 */ + /* CS2 = WAITSTATE_8_3 | BUS_WIDTH_16 | CLKENB */ + /* CS3 = WAITSTATE_7_1 | BUS_WIDTH_32 */ + barebox,ep7209-memcfg1 = <0x25802b28>; + + flash: nor@0,0 { + compatible = "cfi-flash"; + reg = <0 0x00000000 0x02000000>; + bank-width = <2>; + + partitions { + compatible = "fixed-partitions"; + #address-cells = <1>; + #size-cells = <1>; + + partition@0 { + label = "boot"; + reg = <0x00000 0x80000>; + }; + + partition@80000 { + label = "env"; + reg = <0x80000 0x40000>; + }; + + partition@c0000 { + label = "kernel"; + reg = <0xc0000 0x340000>; + }; + + partition@400000 { + label = "root"; + reg = <0x400000 0>; + }; + }; + }; +}; diff --git a/arch/arm/mach-clps711x/Kconfig b/arch/arm/mach-clps711x/Kconfig index 52cf8468c0..6cf6bc37a2 100644 --- a/arch/arm/mach-clps711x/Kconfig +++ b/arch/arm/mach-clps711x/Kconfig @@ -16,7 +16,6 @@ menu "CLPS711X specific settings" config CLPS711X_RAISE_CPUFREQ bool "Raise CPU frequency to 90 MHz" - depends on MACH_CLEP7212 help Raise CPU frequency to 90 MHz. This operation can be performed only for devices which allow to operate at 90 MHz. @@ -24,12 +23,4 @@ config CLPS711X_RAISE_CPUFREQ endmenu -config ARCH_TEXT_BASE - hex - default 0xc0740000 if MACH_CLEP7212 - -config BAREBOX_MAX_IMAGE_SIZE - hex - default 0x00080000 if MACH_CLEP7212 - endif diff --git a/arch/arm/mach-clps711x/Makefile b/arch/arm/mach-clps711x/Makefile index 4d5950d9b5..871c5f7e9c 100644 --- a/arch/arm/mach-clps711x/Makefile +++ b/arch/arm/mach-clps711x/Makefile @@ -1,4 +1,4 @@ # SPDX-License-Identifier: GPL-2.0-only -obj-y += clock.o devices.o reset.o +obj-y += clock.o common.o lwl-y += lowlevel.o diff --git a/arch/arm/mach-clps711x/clock.c b/arch/arm/mach-clps711x/clock.c index 2c5137c582..8674b8c801 100644 --- a/arch/arm/mach-clps711x/clock.c +++ b/arch/arm/mach-clps711x/clock.c @@ -1,11 +1,5 @@ -/* - * Copyright (C) 2012-2016 Alexander Shiyan - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - */ +// SPDX-License-Identifier: GPL-2.0-or-later +// SPDX-FileCopyrightText: Alexander Shiyan #include #include @@ -21,13 +15,15 @@ #define CLPS711X_EXT_FREQ 13000000 static struct clk *clks[CLPS711X_CLK_MAX]; +static struct clk_onecell_data clk_data; -static struct clk_div_table tdiv_tbl[] = { +static const struct clk_div_table tdiv_tbl[] = { { .val = 0, .div = 256, }, { .val = 1, .div = 1, }, + { } }; -static __init int clps711x_clk_init(void) +static int clps711x_clk_probe(struct device_d *dev) { unsigned int f_cpu, f_bus, f_uart, f_timer_ref, pll; u32 tmp; @@ -50,7 +46,7 @@ static __init int clps711x_clk_init(void) f_bus = 36864000 / 2; } - f_uart = f_bus / 10; + f_uart = DIV_ROUND_CLOSEST(f_bus, 10); if (tmp & SYSFLG2_CKMODE) { tmp = readw(SYSCON2); @@ -72,23 +68,25 @@ static __init int clps711x_clk_init(void) clks[CLPS711X_CLK_UART] = clk_fixed("uart", f_uart); clks[CLPS711X_CLK_TIMERREF] = clk_fixed("timer_ref", f_timer_ref); clks[CLPS711X_CLK_TIMER1] = clk_divider_table("timer1", "timer_ref", 0, - IOMEM(SYSCON1), 5, 1, tdiv_tbl, ARRAY_SIZE(tdiv_tbl)); + IOMEM(SYSCON1), 5, 1, tdiv_tbl, 0); clks[CLPS711X_CLK_TIMER2] = clk_divider_table("timer2", "timer_ref", 0, - IOMEM(SYSCON1), 7, 1, tdiv_tbl, ARRAY_SIZE(tdiv_tbl)); + IOMEM(SYSCON1), 7, 1, tdiv_tbl, 0); - clkdev_add_physbase(clks[CLPS711X_CLK_UART], UARTDR1, NULL); - clkdev_add_physbase(clks[CLPS711X_CLK_UART], UARTDR2, NULL); - clkdev_add_physbase(clks[CLPS711X_CLK_TIMER2], TC2D, NULL); + clk_data.clks = clks; + clk_data.clk_num = CLPS711X_CLK_MAX; + of_clk_add_provider(dev->device_node, of_clk_src_onecell_get, &clk_data); return 0; } -postcore_initcall(clps711x_clk_init); -static __init int clps711x_core_init(void) -{ - add_generic_device("clps711x-cs", DEVICE_ID_SINGLE, NULL, - TC2D, SZ_2, IORESOURCE_MEM, NULL); +static const struct of_device_id __maybe_unused clps711x_clk_dt_ids[] = { + { .compatible = "cirrus,ep7209-clk", }, + { } +}; - return 0; -} -coredevice_initcall(clps711x_core_init); +static struct driver_d clps711x_clk_driver = { + .probe = clps711x_clk_probe, + .name = "clps711x-clk", + .of_compatible = DRV_OF_COMPAT(clps711x_clk_dt_ids), +}; +postcore_platform_driver(clps711x_clk_driver); diff --git a/arch/arm/mach-clps711x/common.c b/arch/arm/mach-clps711x/common.c new file mode 100644 index 0000000000..c0b817872d --- /dev/null +++ b/arch/arm/mach-clps711x/common.c @@ -0,0 +1,149 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +// SPDX-FileCopyrightText: Alexander Shiyan + +#include +#include +#include +#include +#include +#include + +#define CLPS711X_MAP_ADDR 0x90000000 + +static u32 remap_size = 0; + +static void __noreturn clps711x_restart(struct restart_handler *rst) +{ + shutdown_barebox(); + + asm("mov pc, #0"); + + hang(); +} + +static __init int is_clps711x_compatible(void) +{ + return of_machine_is_compatible("cirrus,ep7209"); +} + +static __init int clps711x_init(void) +{ + char *serial; + + if (!is_clps711x_compatible()) + return 0; + + restart_handler_register_fn("vector", clps711x_restart); + + serial = basprintf("%08x%08x", 0, readl(UNIQID)); + + barebox_set_serial_number(serial); + + free(serial); + + return 0; +} +postcore_initcall(clps711x_init); + +static int __init clps711x_bus_map(void) +{ + if (is_clps711x_compatible() && remap_size) + map_io_sections(0, (void *)CLPS711X_MAP_ADDR, remap_size); + + return 0; +} +postmmu_initcall(clps711x_bus_map); + +/* Scan for devices that start at zero address and maps them + * to a different unused address. + * To start the kernel, a fixup is used that rewrites the address + * of the patched device to its original state. + */ + +static void clps711x_bus_patch(struct device_node *node, + u32 compare, u32 change) +{ + const __be32 *ranges; + int rsize; + + ranges = of_get_property(node, "ranges", &rsize); + + if (ranges) { + int banks = rsize / (sizeof(u32) * 4); + __be32 *fixed, *fixedptr; + + fixed = xmalloc(rsize); + fixedptr = fixed; + + while (banks--) { + u32 bank, cell, addr, size; + + bank = be32_to_cpu(*ranges++); + cell = be32_to_cpu(*ranges++); + addr = be32_to_cpu(*ranges++); + size = be32_to_cpu(*ranges++); + + if (addr == compare) { + addr = change; + remap_size = size; + } + + *fixedptr++ = cpu_to_be32(bank); + *fixedptr++ = cpu_to_be32(cell); + *fixedptr++ = cpu_to_be32(addr); + *fixedptr++ = cpu_to_be32(size); + } + + of_set_property(node, "ranges", fixed, rsize, 0); + + free(fixed); + } +} + +static int clps711x_bus_fixup(struct device_node *root, void *context) +{ + struct device_node *node = context; + + if (remap_size) + clps711x_bus_patch(node, CLPS711X_MAP_ADDR, 0); + + return 0; +} + +static int clps711x_bus_probe(struct device_d *dev) +{ + u32 mcfg; + + /* Setup bus timings */ + if (!of_property_read_u32(dev->device_node, + "barebox,ep7209-memcfg1", &mcfg)) + writel(mcfg, MEMCFG1); + if (!of_property_read_u32(dev->device_node, + "barebox,ep7209-memcfg2", &mcfg)) + writel(mcfg, MEMCFG2); + + clps711x_bus_patch(dev->device_node, 0, CLPS711X_MAP_ADDR); + + of_platform_populate(dev->device_node, NULL, dev); + + of_register_fixup(clps711x_bus_fixup, dev->device_node); + + return 0; +} + +static const struct of_device_id __maybe_unused clps711x_bus_dt_ids[] = { + { .compatible = "cirrus,ep7209-bus", }, + { } +}; + +static struct driver_d clps711x_bus_driver = { + .name = "clps711x-bus", + .probe = clps711x_bus_probe, + .of_compatible = DRV_OF_COMPAT(clps711x_bus_dt_ids), +}; + +static int __init clps711x_bus_init(void) +{ + return platform_driver_register(&clps711x_bus_driver); +} +core_initcall(clps711x_bus_init); diff --git a/arch/arm/mach-clps711x/include/mach/clps711x.h b/arch/arm/mach-clps711x/include/mach/clps711x.h index 957b2b8477..9aef7f3fd3 100644 --- a/arch/arm/mach-clps711x/include/mach/clps711x.h +++ b/arch/arm/mach-clps711x/include/mach/clps711x.h @@ -1,13 +1,7 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ /* - * Hardware definitions for Cirrus Logic CLPS711X - * - * Copyright (C) 2000 Deep Blue Solutions Ltd. - * Copyright (C) 2012 Alexander Shiyan - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. + * Copyright (C) 2000 Deep Blue Solutions Ltd. + * Copyright (C) 2012-2022 Alexander Shiyan */ #ifndef __MACH_CLPS711X_H @@ -159,6 +153,10 @@ #define SYSCON2_CLKENSL (1 << 13) #define SYSCON2_BUZFREQ (1 << 14) +#define SYSCON_UARTEN (1 << 8) +#define SYSFLG_UBUSY (1 << 11) +#define SYSFLG_UTXFF (1 << 23) + #define SYNCIO_FRMLEN(x) (((x) & 0x1f) << 8) #define SYNCIO_SMCKEN (1 << 13) #define SYNCIO_TXFRMEN (1 << 14) @@ -247,6 +245,16 @@ #define MEMCFG_WAITSTATE_2_0 (14 << 2) #define MEMCFG_WAITSTATE_1_0 (15 << 2) -void clps711x_barebox_entry(u32, void *); +#define UBRLCR_BREAK (1 << 12) +#define UBRLCR_PRTEN (1 << 13) +#define UBRLCR_EVENPRT (1 << 14) +#define UBRLCR_XSTOP (1 << 15) +#define UBRLCR_FIFOEN (1 << 16) +#define UBRLCR_WRDLEN5 (0 << 17) +#define UBRLCR_WRDLEN6 (1 << 17) +#define UBRLCR_WRDLEN7 (2 << 17) +#define UBRLCR_WRDLEN8 (3 << 17) + +void clps711x_start(void *); #endif diff --git a/arch/arm/mach-clps711x/include/mach/debug_ll.h b/arch/arm/mach-clps711x/include/mach/debug_ll.h new file mode 100644 index 0000000000..342bb7628a --- /dev/null +++ b/arch/arm/mach-clps711x/include/mach/debug_ll.h @@ -0,0 +1,21 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +// SPDX-FileCopyrightText: Alexander Shiyan + +#ifndef __MACH_DEBUG_LL_H__ +#define __MACH_DEBUG_LL_H__ + +#include +#include + +static inline void PUTC_LL(char c) +{ + do { + } while (readl(SYSFLG1) & SYSFLG_UTXFF); + + writew(c, UARTDR1); + + do { + } while (readl(SYSFLG1) & SYSFLG_UBUSY); +} + +#endif diff --git a/arch/arm/mach-clps711x/include/mach/devices.h b/arch/arm/mach-clps711x/include/mach/devices.h deleted file mode 100644 index 77c43be25c..0000000000 --- a/arch/arm/mach-clps711x/include/mach/devices.h +++ /dev/null @@ -1,9 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ - -#ifndef __MACH_DEVICES_H -#define __MACH_DEVICES_H - -void clps711x_setup_memcfg(int bank, u32 val); -void clps711x_add_uart(unsigned int id); - -#endif diff --git a/arch/arm/mach-clps711x/lowlevel.c b/arch/arm/mach-clps711x/lowlevel.c index 35b8b35e87..608f0778d7 100644 --- a/arch/arm/mach-clps711x/lowlevel.c +++ b/arch/arm/mach-clps711x/lowlevel.c @@ -1,25 +1,31 @@ -/* - * Copyright (C) 2012 Alexander Shiyan - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - */ +// SPDX-License-Identifier: GPL-2.0-or-later +// SPDX-FileCopyrightText: Alexander Shiyan +#include +#include #include -#include +#include #include +#include -#include -#include -#include +#define DEBUG_LL_BAUDRATE (57600) -#include +static inline void setup_uart(const u32 bus_speed) +{ + u32 baud_base = DIV_ROUND_CLOSEST(bus_speed, 10); + u32 baud_divisor = + DIV_ROUND_CLOSEST(baud_base, DEBUG_LL_BAUDRATE * 16) - 1; + + writel(baud_divisor | UBRLCR_FIFOEN | UBRLCR_WRDLEN8, UBRLCR1); + writel(0, STFCLR); + writel(SYSCON_UARTEN, SYSCON1); -void __naked __bare_init clps711x_barebox_entry(u32 pllmult, void *data) + putc_ll('>'); +} + +void clps711x_start(void *fdt) { - u32 cpu, bus; + u32 bus, pll; /* Check if we running from external 13 MHz clock */ if (!(readl(SYSFLG2) & SYSFLG2_CKMODE)) { @@ -27,24 +33,17 @@ void __naked __bare_init clps711x_barebox_entry(u32 pllmult, void *data) writel(SYSCON3_CLKCTL0 | SYSCON3_CLKCTL1, SYSCON3); asm("nop"); - /* Check valid multiplier, default to 74 MHz */ - if ((pllmult < 20) || (pllmult > 50)) - pllmult = 40; + if (IS_ENABLED(CONFIG_CLPS711X_RAISE_CPUFREQ)) { + /* Setup PLL to 92160000 Hz */ + writel(50 << 24, PLLW); + asm("nop"); + } - /* Setup PLL */ - writel(pllmult << 24, PLLW); - asm("nop"); - - /* Check for old CPUs without PLL */ - if ((readl(PLLR) >> 24) != pllmult) - cpu = 73728000; - else - cpu = pllmult * 3686400; - - if (cpu >= 36864000) - bus = cpu / 2; + pll = readl(PLLR) >> 24; + if (pll) + bus = (pll * 3686400) / 4; else - bus = 36864000 / 2; + bus = 73728000 / 4; } else { bus = 13000000; /* Setup bus wait state scaling factor to 1 */ @@ -52,6 +51,13 @@ void __naked __bare_init clps711x_barebox_entry(u32 pllmult, void *data) asm("nop"); } + + /* Disable UART, IrDa, LCD */ + writel(0, SYSCON1); + + if (IS_ENABLED(CONFIG_DEBUG_LL)) + setup_uart(bus); + /* CLKEN select, SDRAM width=32 */ writel(SYSCON2_CLKENSL, SYSCON2); @@ -62,12 +68,10 @@ void __naked __bare_init clps711x_barebox_entry(u32 pllmult, void *data) /* Setup Refresh Rate (64ms 8K Blocks) */ writel((64 * bus) / (8192 * 1000), SDRFPR); - /* Disable UART, IrDa, LCD */ - writel(0, SYSCON1); /* Disable PWM */ writew(0, PMPCON); /* Disable LED flasher */ writew(0, LEDFLSH); - barebox_arm_entry(SDRAM0_BASE, SZ_8M, data); + barebox_arm_entry(SDRAM0_BASE, SZ_8M, fdt); } diff --git a/arch/arm/mach-clps711x/reset.c b/arch/arm/mach-clps711x/reset.c deleted file mode 100644 index 90ddb8f5d2..0000000000 --- a/arch/arm/mach-clps711x/reset.c +++ /dev/null @@ -1,29 +0,0 @@ -/* - * Copyright (C) 2012 Alexander Shiyan - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - */ - -#include -#include -#include - -static void __noreturn clps711x_restart_soc(struct restart_handler *rst) -{ - shutdown_barebox(); - - asm("mov pc, #0"); - - hang(); -} - -static int restart_register_feature(void) -{ - restart_handler_register_fn("vector", clps711x_restart_soc); - - return 0; -} -coredevice_initcall(restart_register_feature); diff --git a/drivers/clocksource/clps711x.c b/drivers/clocksource/clps711x.c index 1fe7f6c891..d6ab695afa 100644 --- a/drivers/clocksource/clps711x.c +++ b/drivers/clocksource/clps711x.c @@ -27,6 +27,11 @@ static int clps711x_cs_probe(struct device_d *dev) struct resource *iores; u32 rate; struct clk *timer_clk; + int id; + + id = of_alias_get_id(dev->device_node, "timer"); + if (id != 1) + return 0; timer_clk = clk_get(dev, NULL); if (IS_ERR(timer_clk)) @@ -46,7 +51,7 @@ static int clps711x_cs_probe(struct device_d *dev) return init_clock(&clps711x_cs); } -static __maybe_unused struct of_device_id clps711x_timer_dt_ids[] = { +static const struct of_device_id __maybe_unused clps711x_timer_dt_ids[] = { { .compatible = "cirrus,ep7209-timer", }, { } }; diff --git a/drivers/gpio/gpio-clps711x.c b/drivers/gpio/gpio-clps711x.c index a1965b33e4..cb4bd4025c 100644 --- a/drivers/gpio/gpio-clps711x.c +++ b/drivers/gpio/gpio-clps711x.c @@ -10,13 +10,10 @@ static int clps711x_gpio_probe(struct device_d *dev) { struct resource *iores; - int err, id = dev->id; + int err, id = of_alias_get_id(dev->device_node, "gpio"); void __iomem *dat, *dir = NULL, *dir_inv = NULL; struct bgpio_chip *bgc; - if (dev->device_node) - id = of_alias_get_id(dev->device_node, "gpio"); - if (id < 0 || id > 4) return -ENODEV; @@ -62,7 +59,7 @@ out_err: return err; } -static struct of_device_id __maybe_unused clps711x_gpio_dt_ids[] = { +static const struct of_device_id __maybe_unused clps711x_gpio_dt_ids[] = { { .compatible = "cirrus,ep7209-gpio", }, { /* sentinel */ } }; diff --git a/drivers/serial/serial_clps711x.c b/drivers/serial/serial_clps711x.c index 7aac0970bf..cb7043d8e0 100644 --- a/drivers/serial/serial_clps711x.c +++ b/drivers/serial/serial_clps711x.c @@ -35,7 +35,7 @@ struct clps711x_uart { void __iomem *base; - void __iomem *syscon; + struct regmap *regmap; struct clk *uart_clk; struct console_device cdev; }; @@ -61,8 +61,7 @@ static void clps711x_init_port(struct console_device *cdev) u32 tmp; /* Disable the UART */ - tmp = readl(s->syscon + SYSCON); - writel(tmp & ~SYSCON_UARTEN, s->syscon + SYSCON); + regmap_update_bits(s->regmap, SYSCON, SYSCON_UARTEN, 0); /* Setup Line Control Register */ tmp = readl(s->base + UBRLCR) & UBRLCR_BAUD_MASK; @@ -70,17 +69,19 @@ static void clps711x_init_port(struct console_device *cdev) writel(tmp, s->base + UBRLCR); /* Enable the UART */ - tmp = readl(s->syscon + SYSCON); - writel(tmp | SYSCON_UARTEN, s->syscon + SYSCON); + regmap_update_bits(s->regmap, SYSCON, SYSCON_UARTEN, SYSCON_UARTEN); } static void clps711x_putc(struct console_device *cdev, char c) { struct clps711x_uart *s = cdev->dev->priv; + u32 tmp; /* Wait until there is space in the FIFO */ do { - } while (readl(s->syscon + SYSFLG) & SYSFLG_UTXFF); + regmap_read(s->regmap, SYSFLG, &tmp); + + } while (tmp & SYSFLG_UTXFF); /* Send the character */ writew(c, s->base + UARTDR); @@ -90,10 +91,12 @@ static int clps711x_getc(struct console_device *cdev) { struct clps711x_uart *s = cdev->dev->priv; u16 data; + u32 tmp; /* Wait until there is data in the FIFO */ do { - } while (readl(s->syscon + SYSFLG) & SYSFLG_URXFE); + regmap_read(s->regmap, SYSFLG, &tmp); + } while (tmp & SYSFLG_URXFE); data = readw(s->base + UARTDR); @@ -107,32 +110,32 @@ static int clps711x_getc(struct console_device *cdev) static int clps711x_tstc(struct console_device *cdev) { struct clps711x_uart *s = cdev->dev->priv; + u32 tmp; - return !(readl(s->syscon + SYSFLG) & SYSFLG_URXFE); + regmap_read(s->regmap, SYSFLG, &tmp); + + return !(tmp & SYSFLG_URXFE); } static void clps711x_flush(struct console_device *cdev) { struct clps711x_uart *s = cdev->dev->priv; + u32 tmp; do { - } while (readl(s->syscon + SYSFLG) & SYSFLG_UBUSY); + regmap_read(s->regmap, SYSFLG, &tmp); + } while (tmp & SYSFLG_UBUSY); } static int clps711x_probe(struct device_d *dev) { + struct device_node *syscon; struct clps711x_uart *s; - int err, id = dev->id; - char syscon_dev[8]; const char *devname; - - if (dev->device_node) - id = of_alias_get_id(dev->device_node, "serial"); - - if (id != 0 && id != 1) - return -EINVAL; + int err; s = xzalloc(sizeof(struct clps711x_uart)); + s->uart_clk = clk_get(dev, NULL); if (IS_ERR(s->uart_clk)) { err = PTR_ERR(s->uart_clk); @@ -140,19 +143,15 @@ static int clps711x_probe(struct device_d *dev) } s->base = dev_get_mem_region(dev, 0); - if (IS_ERR(s->base)) - return PTR_ERR(s->base); - - if (!dev->device_node) { - sprintf(syscon_dev, "syscon%i", id + 1); - s->syscon = syscon_base_lookup_by_pdevname(syscon_dev); - } else { - s->syscon = syscon_base_lookup_by_phandle(dev->device_node, - "syscon"); + if (IS_ERR(s->base)) { + err = PTR_ERR(s->base); + goto out_err; } - if (IS_ERR(s->syscon)) { - err = PTR_ERR(s->syscon); + syscon = of_parse_phandle(dev->device_node, "syscon", 0); + s->regmap = syscon_node_to_regmap(syscon); + if (IS_ERR(s->regmap)) { + err = PTR_ERR(s->regmap); goto out_err; } @@ -182,7 +181,7 @@ out_err: return err; } -static struct of_device_id __maybe_unused clps711x_uart_dt_ids[] = { +static const struct of_device_id __maybe_unused clps711x_uart_dt_ids[] = { { .compatible = "cirrus,ep7209-uart", }, { /* sentinel */ } }; diff --git a/images/Makefile b/images/Makefile index 5e2b9ecaaa..a148cf4176 100644 --- a/images/Makefile +++ b/images/Makefile @@ -152,6 +152,7 @@ include $(srctree)/images/Makefile.ar231x include $(srctree)/images/Makefile.ath79 include $(srctree)/images/Makefile.bcm283x include $(srctree)/images/Makefile.bcm47xx +include $(srctree)/images/Makefile.clps711x include $(srctree)/images/Makefile.imx include $(srctree)/images/Makefile.loongson include $(srctree)/images/Makefile.malta diff --git a/images/Makefile.clps711x b/images/Makefile.clps711x new file mode 100644 index 0000000000..d76911d627 --- /dev/null +++ b/images/Makefile.clps711x @@ -0,0 +1,8 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# barebox image generation Makefile for CLPS711X images +# + +pblb-$(CONFIG_MACH_CLEP7212) += start_ep7212_clep7212 +FILE_barebox-ep7212-clep7212.img = start_ep7212_clep7212.pblb +image-$(CONFIG_MACH_CLEP7212) += barebox-ep7212-clep7212.img -- 2.32.0 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox