Re: [PATCH v3 2/3] arm: mmp: add initial support for PXA1908 SoC

On 24.01.25 16:47, Duje Mihanović wrote:

Add initial support for Marvell PXA1908. The SoC has 4 Cortex-A53 cores, a GC7000UL GPU and a variety of peripheral controllers.

Signed-off-by: Duje Mihanović duje.mihanovic@skole.hr

Reviewed-by: Stefan Roese sr@denx.de

Thanks, Stefan

---

MAINTAINERS | 8 ++++ arch/arm/Kconfig | 11 +++++ arch/arm/Makefile | 1 + arch/arm/dts/pxa1908.dtsi | 106 +++++++++++++++++++++++++++++++++++++++++++++ arch/arm/mach-mmp/Kconfig | 6 +++ arch/arm/mach-mmp/Makefile | 1 + arch/arm/mach-mmp/board.c | 84 +++++++++++++++++++++++++++++++++++ arch/arm/mach-mmp/mmu.c | 30 +++++++++++++ include/configs/pxa1908.h | 18 ++++++++ 9 files changed, 265 insertions(+)

diff --git a/MAINTAINERS b/MAINTAINERS index dc8e048dde491c81fea568793d409ced6c5073dd..247f525847e73c6791cba816c00708044086b149 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -386,6 +386,14 @@ T: git https://source.denx.de/u-boot/custodians/u-boot-marvell.git F: drivers/pci/pci-aardvark.c F: drivers/pci/pci_mvebu.c

+ARM MARVELL PXA1908 +M: Duje Mihanović duje.mihanovic@skole.hr +S: Maintained +T: git git://git.dujemihanovic.xyz/u-boot.git +F: arch/arm/dts/pxa1908* +F: arch/arm/mach-mmp/ +F: include/configs/pxa1908.h

• ARM MARVELL SERIAL DRIVERS M: Pali Rohár pali@kernel.org M: Stefan Roese sr@denx.de

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 314916527c9e5ef3b4cf8388511dbd224aaac512..f504d7d07601e2e275888bc179748a7ff9593a00 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -842,6 +842,15 @@ config ARCH_MEDIATEK Support for the MediaTek SoCs family developed by MediaTek Inc. Please refer to doc/README.mediatek for more information.

+config ARCH_MMP

• bool "Marvell MMP"
• select ARM64
• select DM
• select DM_SERIAL
• select OF_CONTROL
• select SAVE_PREV_BL_FDT_ADDR
• select SAVE_PREV_BL_INITRAMFS_START_ADDR
• config ARCH_LPC32XX bool "NXP LPC32xx platform" select CPU_ARM926EJS

@@ -2310,6 +2319,8 @@ source "arch/arm/mach-meson/Kconfig"

source "arch/arm/mach-mediatek/Kconfig"

+source "arch/arm/mach-mmp/Kconfig"

• source "arch/arm/mach-qemu/Kconfig"

  source "arch/arm/mach-rockchip/Kconfig"

diff --git a/arch/arm/Makefile b/arch/arm/Makefile index cb87a68475406890713ad356024ee16b53ae464e..7334e79965f1f4701cf1d2aed13ccb24d2138507 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -69,6 +69,7 @@ machine-$(CONFIG_ARCH_KIRKWOOD) += kirkwood machine-$(CONFIG_ARCH_LPC32XX) += lpc32xx machine-$(CONFIG_ARCH_MEDIATEK) += mediatek machine-$(CONFIG_ARCH_MESON) += meson +machine-$(CONFIG_ARCH_MMP) += mmp machine-$(CONFIG_ARCH_MVEBU) += mvebu machine-$(CONFIG_ARCH_NEXELL) += nexell machine-$(CONFIG_ARCH_NPCM) += npcm diff --git a/arch/arm/dts/pxa1908.dtsi b/arch/arm/dts/pxa1908.dtsi new file mode 100644 index 0000000000000000000000000000000000000000..e8ec2606c2515ee2031004ab3102fec37b7d4b87 --- /dev/null +++ b/arch/arm/dts/pxa1908.dtsi @@ -0,0 +1,106 @@ +// SPDX-License-Identifier: GPL-2.0-only +/dts-v1/;

+#include <dt-bindings/interrupt-controller/arm-gic.h>

+/ {

• model = "Marvell Armada PXA1908";
• compatible = "marvell,pxa1908";
• #address-cells = <2>;
• #size-cells = <2>;
• interrupt-parent = <&gic>;
• cpus {

• #address-cells = <2>;
  

• #size-cells = <0>;
  

• cpu0: cpu@0 {
  

• 	device_type = "cpu";
  

• 	compatible = "arm,cortex-a53";
  

• 	reg = <0 0>;
  

• 	enable-method = "psci";
  

• };
  

• cpu1: cpu@1 {
  

• 	device_type = "cpu";
  

• 	compatible = "arm,cortex-a53";
  

• 	reg = <0 1>;
  

• 	enable-method = "psci";
  

• };
  

• cpu2: cpu@2 {
  

• 	device_type = "cpu";
  

• 	compatible = "arm,cortex-a53";
  

• 	reg = <0 2>;
  

• 	enable-method = "psci";
  

• };
  

• cpu3: cpu@3 {
  

• 	device_type = "cpu";
  

• 	compatible = "arm,cortex-a53";
  

• 	reg = <0 3>;
  

• 	enable-method = "psci";
  

• };
  

• };
• psci {

• compatible = "arm,psci-0.2";
  

• method = "smc";
  

• };
• timer {

• compatible = "arm,armv8-timer";
  

• interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
  

• 	<GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
  

• 	<GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
  

• 	<GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
  

• };
• soc {

• compatible = "simple-bus";
  

• #address-cells = <2>;
  

• #size-cells = <2>;
  

• ranges;
  

• gic: interrupt-controller@d1df9000 {
  

• 	compatible = "arm,gic-400";
  

• 	reg = <0 0xd1df9000 0 0x1000>,
  

• 		<0 0xd1dfa000 0 0x2000>,
  

• 		/* The subsequent registers are guesses. */
  

• 		<0 0xd1dfc000 0 0x2000>,
  

• 		<0 0xd1dfe000 0 0x2000>;
  

• 	interrupts = <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
  

• 	interrupt-controller;
  

• 	#interrupt-cells = <3>;
  

• };
  

• apb@d4000000 {
  

• 	compatible = "simple-bus";
  

• 	reg = <0 0xd4000000 0 0x200000>;
  

• 	#address-cells = <1>;
  

• 	#size-cells = <1>;
  

• 	ranges = <0 0 0xd4000000 0x200000>;
  

• 	uart0: serial@17000 {
  

• 		compatible = "mrvl,mmp-uart", "intel,xscale-uart";
  

• 		reg = <0x17000 0x1000>;
  

• 		clock-frequency = <14745600>;
  

• 		reg-shift = <2>;
  

• 	};
  

• 	uart1: serial@18000 {
  

• 		compatible = "mrvl,mmp-uart", "intel,xscale-uart";
  

• 		reg = <0x18000 0x1000>;
  

• 		clock-frequency = <14745600>;
  

• 		reg-shift = <2>;
  

• 	};
  

• 	uart2: serial@36000 {
  

• 		compatible = "mrvl,mmp-uart", "intel,xscale-uart";
  

• 		reg = <0x36000 0x1000>;
  

• 		clock-frequency = <117000000>;
  

• 		reg-shift = <2>;
  

• 	};
  

• };
  

• };

+}; diff --git a/arch/arm/mach-mmp/Kconfig b/arch/arm/mach-mmp/Kconfig new file mode 100644 index 0000000000000000000000000000000000000000..b9438c6facb2e7f29f608bc72e97657d97a0d7dc --- /dev/null +++ b/arch/arm/mach-mmp/Kconfig @@ -0,0 +1,6 @@ +if ARCH_MMP

+config LNX_KRNL_IMG_TEXT_OFFSET_BASE

• default TEXT_BASE

+endif diff --git a/arch/arm/mach-mmp/Makefile b/arch/arm/mach-mmp/Makefile new file mode 100644 index 0000000000000000000000000000000000000000..99beaed05c2493b55610f1012383755015c62958 --- /dev/null +++ b/arch/arm/mach-mmp/Makefile @@ -0,0 +1 @@ +obj-y += board.o mmu.o diff --git a/arch/arm/mach-mmp/board.c b/arch/arm/mach-mmp/board.c new file mode 100644 index 0000000000000000000000000000000000000000..3384e5377a7e0f0f379d58d18a3147fd2b8c62ae --- /dev/null +++ b/arch/arm/mach-mmp/board.c @@ -0,0 +1,84 @@ +// SPDX-License-Identifier: GPL-2.0+ +/*

• • Copyright (c) 2024
• • Duje Mihanović duje.mihanovic@skole.hr
• */

+#include <errno.h> +#include <init.h> +#include <fdt_support.h> +#include <asm/io.h> +#include <asm/global_data.h>

+DECLARE_GLOBAL_DATA_PTR;

+/* Timer constants */ +#define APBC_COUNTER_CLK_SEL 0xd4015064 +#define COUNTER_BASE 0xd4101000 +#define COUNTER_EN BIT(0) +#define COUNTER_HALT_ON_DEBUG BIT(1)

+int timer_init(void) +{

• u32 tmp = readl(APBC_COUNTER_CLK_SEL);
• if ((tmp >> 16) != 0x319)

• return -1;
  

• /* Set timer frequency to 26MHz */
• writel(tmp | 1, APBC_COUNTER_CLK_SEL);
• writel(COUNTER_EN | COUNTER_HALT_ON_DEBUG, COUNTER_BASE);
• gd->arch.timer_rate_hz = 26000000;
• return 0;

+}

+int board_init(void) +{

• return 0;

+}

+int dram_init(void) +{

• if (fdtdec_setup_mem_size_base() != 0)

• puts("fdtdec_setup_mem_size_base() has failed\n");
  

• return 0;

+}

+#ifndef CONFIG_SYSRESET +void reset_cpu(void) +{ +} +#endif

+/* Stolen from arch/arm/mach-snapdragon/board.c */ +int board_fdt_blob_setup(void **fdtp) +{

• struct fdt_header *fdt;
• bool internal_valid, external_valid;
• int ret = 0;
• fdt = (struct fdt_header *)get_prev_bl_fdt_addr();
• external_valid = fdt && !fdt_check_header(fdt);
• internal_valid = !fdt_check_header(*fdtp);
• /*

• * There is no point returning an error here, U-Boot can't do anything useful in this situation.
  

• * Bail out while we can still print a useful error message.
  

• */
  

• if (!internal_valid && !external_valid)

• panic("Internal FDT is invalid and no external FDT was provided! (fdt=%#llx)\n",
  

•       (phys_addr_t)fdt);
  

• if (internal_valid) {

• debug("Using built in FDT\n");
  

• ret = -EEXIST;
  

• } else {

• debug("Using external FDT\n");
  

• /* So we can use it before returning */
  

• *fdtp = fdt;
  

• }
• return ret;

+} diff --git a/arch/arm/mach-mmp/mmu.c b/arch/arm/mach-mmp/mmu.c new file mode 100644 index 0000000000000000000000000000000000000000..ad2f1e3d994ba21bc63d05f3b33586d0bfffe702 --- /dev/null +++ b/arch/arm/mach-mmp/mmu.c @@ -0,0 +1,30 @@ +// SPDX-License-Identifier: GPL-2.0+ +/*

• • Copyright (c) 2024
• • Duje Mihanović duje.mihanovic@skole.hr
• */

+#include <asm/armv8/mmu.h> +#include <linux/sizes.h>

+static struct mm_region pxa1908_mem_map[] = {

• {

• .virt = 0x0UL,
  

• .phys = 0x0UL,
  

• .size = 2UL * SZ_1G,
  

• .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
  

• 	 PTE_BLOCK_INNER_SHARE
  

• },
• {

• .virt = 0x80000000UL,
  

• .phys = 0x80000000UL,
  

• .size = 2UL * SZ_1G,
  

• .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
  

• 	 PTE_BLOCK_INNER_SHARE |
  

• 	 PTE_BLOCK_PXN | PTE_BLOCK_UXN
  

• },
• {

• 0,
  

• }

+};

+struct mm_region *mem_map = pxa1908_mem_map; diff --git a/include/configs/pxa1908.h b/include/configs/pxa1908.h new file mode 100644 index 0000000000000000000000000000000000000000..b0d6cdfeb760e215ff4a0e75d3d071c3a58ff82e --- /dev/null +++ b/include/configs/pxa1908.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/*

• • Copyright (c) 2024
• • Duje Mihanović duje.mihanovic@skole.hr
• */

+#ifndef __PXA1908_H +#define __PXA1908_H

+#define CFG_SYS_SDRAM_BASE 0x1000000 +#define CFG_SYS_INIT_RAM_ADDR 0x10000000 +#define CFG_SYS_INIT_RAM_SIZE 0x4000 +#define CFG_SYS_NS16550_IER 0x40 +#define CFG_SYS_BAUDRATE_TABLE { 115200, 230400, 460800, 921600 } +#define CFG_EXTRA_ENV_SETTINGS \

• "bootcmd=bootm $prevbl_initrd_start_addr\0"

+#endif

Viele Grüße, Stefan Roese