From 626f048bbc1463bc96973822f45d12e4368be951 Mon Sep 17 00:00:00 2001 From: Mateusz Kulikowski Date: Thu, 31 Mar 2016 23:12:33 +0200 Subject: board: Add Qualcomm Dragonboard 410C support This commit add support for 96Boards Dragonboard410C. It is board based on APQ8016 Qualcomm SoC, complying with 96boards specification. Features (present out of the box): - 4x Cortex A53 (ARMv8) - 2x USB Host port - 1x USB Device port - 4x LEDs - 1x HDMI connector - 1x uSD connector - 3x buttons (Power, Vol+, Vol-/Reset) - WIFI, Bluetooth with integrated antenna - 8GiB eMMC U-Boot boots chained with fastboot in 64-bit mode. For detailed build instructions see readme.txt in board directory. Signed-off-by: Mateusz Kulikowski Tested-by: Simon Glass --- board/qualcomm/dragonboard410c/Kconfig | 15 +++ board/qualcomm/dragonboard410c/MAINTAINERS | 6 ++ board/qualcomm/dragonboard410c/Makefile | 8 ++ board/qualcomm/dragonboard410c/dragonboard410c.c | 131 +++++++++++++++++++++++ board/qualcomm/dragonboard410c/head.S | 34 ++++++ board/qualcomm/dragonboard410c/readme.txt | 71 ++++++++++++ board/qualcomm/dragonboard410c/u-boot.lds | 90 ++++++++++++++++ 7 files changed, 355 insertions(+) create mode 100644 board/qualcomm/dragonboard410c/Kconfig create mode 100644 board/qualcomm/dragonboard410c/MAINTAINERS create mode 100644 board/qualcomm/dragonboard410c/Makefile create mode 100644 board/qualcomm/dragonboard410c/dragonboard410c.c create mode 100644 board/qualcomm/dragonboard410c/head.S create mode 100644 board/qualcomm/dragonboard410c/readme.txt create mode 100644 board/qualcomm/dragonboard410c/u-boot.lds (limited to 'board/qualcomm') diff --git a/board/qualcomm/dragonboard410c/Kconfig b/board/qualcomm/dragonboard410c/Kconfig new file mode 100644 index 0000000..03bd7ae --- /dev/null +++ b/board/qualcomm/dragonboard410c/Kconfig @@ -0,0 +1,15 @@ +if TARGET_DRAGONBOARD410C + +config SYS_BOARD + default "dragonboard410c" + +config SYS_VENDOR + default "qualcomm" + +config SYS_SOC + default "apq8016" + +config SYS_CONFIG_NAME + default "dragonboard410c" + +endif diff --git a/board/qualcomm/dragonboard410c/MAINTAINERS b/board/qualcomm/dragonboard410c/MAINTAINERS new file mode 100644 index 0000000..65cb47c --- /dev/null +++ b/board/qualcomm/dragonboard410c/MAINTAINERS @@ -0,0 +1,6 @@ +DRAGONBOARD410C BOARD +M: Mateusz Kulikowski +S: Maintained +F: board/qualcomm/dragonboard410c/ +F: include/configs/dragonboard410c.h +F: configs/dragonboard410c_defconfig diff --git a/board/qualcomm/dragonboard410c/Makefile b/board/qualcomm/dragonboard410c/Makefile new file mode 100644 index 0000000..cd67808 --- /dev/null +++ b/board/qualcomm/dragonboard410c/Makefile @@ -0,0 +1,8 @@ +# +# (C) Copyright 2015 Mateusz Kulikowski +# +# SPDX-License-Identifier: GPL-2.0+ +# + +obj-y := dragonboard410c.o +extra-y += head.o diff --git a/board/qualcomm/dragonboard410c/dragonboard410c.c b/board/qualcomm/dragonboard410c/dragonboard410c.c new file mode 100644 index 0000000..1fa5664 --- /dev/null +++ b/board/qualcomm/dragonboard410c/dragonboard410c.c @@ -0,0 +1,131 @@ +/* + * Board init file for Dragonboard 410C + * + * (C) Copyright 2015 Mateusz Kulikowski + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +int dram_init(void) +{ + gd->ram_size = PHYS_SDRAM_1_SIZE; + return 0; +} + +void dram_init_banksize(void) +{ + gd->bd->bi_dram[0].start = PHYS_SDRAM_1; + gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE; +} + + +int board_prepare_usb(enum usb_init_type type) +{ + static struct udevice *pmic_gpio; + static struct gpio_desc hub_reset, usb_sel; + int ret = 0, node; + + if (!pmic_gpio) { + ret = uclass_get_device_by_name(UCLASS_GPIO, + "pm8916_gpios@c000", + &pmic_gpio); + if (ret < 0) { + printf("Failed to find pm8916_gpios@c000 node.\n"); + return ret; + } + } + + /* Try to request gpios needed to start usb host on dragonboard */ + if (!dm_gpio_is_valid(&hub_reset)) { + node = fdt_subnode_offset(gd->fdt_blob, pmic_gpio->of_offset, + "usb_hub_reset_pm"); + if (node < 0) { + printf("Failed to find usb_hub_reset_pm dt node.\n"); + return node; + } + ret = gpio_request_by_name_nodev(gd->fdt_blob, node, "gpios", 0, + &hub_reset, 0); + if (ret < 0) { + printf("Failed to request usb_hub_reset_pm gpio.\n"); + return ret; + } + } + + if (!dm_gpio_is_valid(&usb_sel)) { + node = fdt_subnode_offset(gd->fdt_blob, pmic_gpio->of_offset, + "usb_sw_sel_pm"); + if (node < 0) { + printf("Failed to find usb_sw_sel_pm dt node.\n"); + return 0; + } + ret = gpio_request_by_name_nodev(gd->fdt_blob, node, "gpios", 0, + &usb_sel, 0); + if (ret < 0) { + printf("Failed to request usb_sw_sel_pm gpio.\n"); + return ret; + } + } + + if (type == USB_INIT_HOST) { + /* Start USB Hub */ + dm_gpio_set_dir_flags(&hub_reset, + GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE); + mdelay(100); + /* Switch usb to host connectors */ + dm_gpio_set_dir_flags(&usb_sel, + GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE); + mdelay(100); + } else { /* Device */ + /* Disable hub */ + dm_gpio_set_dir_flags(&hub_reset, GPIOD_IS_OUT); + /* Switch back to device connector */ + dm_gpio_set_dir_flags(&usb_sel, GPIOD_IS_OUT); + } + + return 0; +} + +int board_init(void) +{ + return 0; +} + +/* Check for vol- button - if pressed - stop autoboot */ +int misc_init_r(void) +{ + struct udevice *pon; + struct gpio_desc resin; + int node, ret; + + ret = uclass_get_device_by_name(UCLASS_GPIO, "pm8916_pon@800", &pon); + if (ret < 0) { + printf("Failed to find PMIC pon node. Check device tree\n"); + return 0; + } + + node = fdt_subnode_offset(gd->fdt_blob, pon->of_offset, "key_vol_down"); + if (node < 0) { + printf("Failed to find key_vol_down node. Check device tree\n"); + return 0; + } + + if (gpio_request_by_name_nodev(gd->fdt_blob, node, "gpios", 0, &resin, + 0)) { + printf("Failed to request key_vol_down button.\n"); + return 0; + } + + if (dm_gpio_get_value(&resin)) { + setenv("bootdelay", "-1"); + printf("Power button pressed - dropping to console.\n"); + } + + return 0; +} diff --git a/board/qualcomm/dragonboard410c/head.S b/board/qualcomm/dragonboard410c/head.S new file mode 100644 index 0000000..ba29b12 --- /dev/null +++ b/board/qualcomm/dragonboard410c/head.S @@ -0,0 +1,34 @@ +/* + * ARM64 header for proper chain-loading with Little Kernel. + * + * Little Kernel shipped with Dragonboard410C boots standard Linux images for + * ARM64. This file adds header that is required to boot U-Boot properly. + * + * For details see: + * https://www.kernel.org/doc/Documentation/arm64/booting.txt + * + * (C) Copyright 2015 Mateusz Kulikowski + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include + +.global _arm64_header +_arm64_header: + b _start + .word 0 + /* Image load offset from start of RAM, little-endian */ + .quad CONFIG_SYS_TEXT_BASE-PHYS_SDRAM_1 + /* Effective size of kernel image, little-endian */ + .quad 0 /* 0x60000 - ignored */ + /* Informative flags, little-endian */ + .quad 0 + .quad 0 /* reserved */ + .quad 0 /* reserved */ + .quad 0 /* reserved */ + .byte 0x41 /* Magic number, "ARM\x64" */ + .byte 0x52 + .byte 0x4d + .byte 0x64 + .word 0 /* reserved */ diff --git a/board/qualcomm/dragonboard410c/readme.txt b/board/qualcomm/dragonboard410c/readme.txt new file mode 100644 index 0000000..7fc7c7a --- /dev/null +++ b/board/qualcomm/dragonboard410c/readme.txt @@ -0,0 +1,71 @@ +# +# (C) Copyright 2015 Mateusz Kulikowski +# +# SPDX-License-Identifier: GPL-2.0+ +# + +Build & Run instructions: + +1) Install mkbootimg and dtbTool from + git://codeaurora.org/quic/kernel/skales (15ece94f09 worked for me) +2) Setup CROSS_COMPILE to aarch64 compiler +3) make dragonboard410c_config +4) make +5) generate fake, empty ramdisk (can have 0 bytes) +$ touch rd + +6) Generate qualcomm device tree table with dtbTool [1] +$ dtbTool -o dt.img arch/arm/dts + +7) Generate Android boot image with mkbootimg [2]: +$ mkbootimg --kernel=u-boot-dtb.bin --output=u-boot.img --dt=dt.img \ + --pagesize 2048 --base 0x80000000 --ramdisk=rd --cmdline="" + +8) Enter fastboot (reboot board with vol- button pressed) + +9) Boot it: +$ fastboot boot u-boot.img +or flash as kernel: +$ fastboot flash boot u-boot.img +$ fastboot reboot + + +What is working: +- UART +- GPIO (SoC) +- SD +- eMMC +- Reset +- USB in EHCI mode (usb starts does switch device->host, usb stop does the opposite) +- PMIC GPIOS (but not in generic subsystem) +- PMIC "special" buttons (power, vol-) + +What is not working / known bugs: +- SDHCI is slow (~2.5MiB/s for SD and eMMC) + +[1] To boot any kernel image, Little Kernel requires valid device tree for the +platform it runs on. dtbTool creates device tree table that Little Kernel scans. +Later on proper device tree is passed to next boot stage. +Full device tree is not required to boot u-boot. Enough would be: +/dts-v1/; + +/ { + model = "Qualcomm Technologies, Inc. Dragonboard 410c"; + compatible = "qcom,dragonboard", "qcom,apq8016-sbc"; + qcom,msm-id = <0xce 0x0 0xf8 0x0 0xf9 0x0 0xfa 0x0 0xf7 0x0>; + qcom,board-id = <0x10018 0x0>; + #address-cells = <0x2>; + #size-cells = <0x2>; + chosen { }; + aliases { }; + + memory { + device_type = "memory"; + reg = <0 0x80000000 0 0x3da00000>; + }; +}; + +but for simplicity (and because size of image is not that critical) we use +existing Qualcomm device trees. + +[2] Note that ramdisk is required, even if it is unused. diff --git a/board/qualcomm/dragonboard410c/u-boot.lds b/board/qualcomm/dragonboard410c/u-boot.lds new file mode 100644 index 0000000..6e1c5a8 --- /dev/null +++ b/board/qualcomm/dragonboard410c/u-boot.lds @@ -0,0 +1,90 @@ +/* + * Override linker script for fastboot-readable images + * + * (C) Copyright 2015 Mateusz Kulikowski + * + * Based on arch/arm/cpu/armv8/u-boot.lds (Just add header) + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +OUTPUT_FORMAT("elf64-littleaarch64", "elf64-littleaarch64", "elf64-littleaarch64") +OUTPUT_ARCH(aarch64) +ENTRY(_arm64_header) +SECTIONS +{ + . = 0x00000000; + + . = ALIGN(8); + .text : + { + *(.__image_copy_start) + board/qualcomm/dragonboard410c/head.o (.text*) + CPUDIR/start.o (.text*) + *(.text*) + } + + . = ALIGN(8); + .rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) } + + . = ALIGN(8); + .data : { + *(.data*) + } + + . = ALIGN(8); + + . = .; + + . = ALIGN(8); + .u_boot_list : { + KEEP(*(SORT(.u_boot_list*))); + } + + . = ALIGN(8); + + .image_copy_end : + { + *(.__image_copy_end) + } + + . = ALIGN(8); + + .rel_dyn_start : + { + *(.__rel_dyn_start) + } + + .rela.dyn : { + *(.rela*) + } + + .rel_dyn_end : + { + *(.__rel_dyn_end) + } + + _end = .; + + . = ALIGN(8); + + .bss_start : { + KEEP(*(.__bss_start)); + } + + .bss : { + *(.bss*) + . = ALIGN(8); + } + + .bss_end : { + KEEP(*(.__bss_end)); + } + + /DISCARD/ : { *(.dynsym) } + /DISCARD/ : { *(.dynstr*) } + /DISCARD/ : { *(.dynamic*) } + /DISCARD/ : { *(.plt*) } + /DISCARD/ : { *(.interp*) } + /DISCARD/ : { *(.gnu*) } +} -- cgit v1.1