使用debootstrap构建debian根文件系统
构建根文件系统
环境
cpu架构： armel 32bit kernel版本： 5.18.0
镜像的制作
Debian根文件系统的安装
第一阶段
# assume at ~/source/debian_work
# run as root
mkdir rootfs
# for armel
/usr/sbin/debootstrap --foreign --arch armel bullseye \
rootfs https://mirrors.tuna.tsinghua.edu.cn/debian/
# for armhf
/usr/sbin/debootstrap --foreign --arch armhf bullseye \
rootfs https://mirrors.tuna.tsinghua.edu.cn/debian/
cp /usr/bin/qemu-arm-static rootfs/usr/bin
LANG=en_US.UTF-8 chroot rootfs qemu-arm-static /bin/bash
安装必要的软件
先安装locales生成一下本地化信息
apt install vim net-tools alsa-utils iw wireless-tools gcc g++ udhcpc ssh make git python3 python3-pip bash-completion
安装可选的软件
安装显示管理器
安装 xfce4 桌面
sudo apt install xorg --no-install-recommends
sudo apt install xfce4 --no-install-recommends
xinit -- :0 -nolisten tcp vt7 -noreset -f /dev/null &
安装 lxde 桌面
安装 lxqt 桌面
安装 wmaker 桌面
安装 fvwm-crystal 桌面
安装 mate 桌面
打包UBI镜像
sudo mkfs.ubifs -d targetdir -e 0x1f000 -c 1023 -m 0x800 -x none -F -o ./rootfs.ubifs
ubinize -o rootfs.ubi -m 0x800 -p 0x20000 ./ubinize.cfg
> cat ubinize.cfg
[ubifs]
mode=ubi
vol_id=0
vol_type=dynamic
vol_size=112MiB
vol_name=rootfs
vol_alignment=1
vol_flags=autoresize
image=./rootfs.ubifs
更多
T113 buildroot sdk 移植debian
修改内核配置
开启如下选项
General Setup ----> Control Group support
修改设备树
dtc -I dtb -O dts ./sun8iw20p1-t113-100ask-t113-pro.dtb > dump.dts
spi1_pins_a: spi1@0 {
pins = "PD11", "PD12", "PD13", "PD14", "PD15"; /*clk mosi miso hold wp*/
function = "spi1";
drive-strength = <10>;
};
spi1_pins_b: spi1@1 {
pins = "PD10";
function = "spi1";
drive-strength = <10>;
bias-pull-up; // only CS should be pulled up
};
spi1_pins_c: spi1@2 {
allwinner,pins = "PD11", "PD12", "PD13", "PD14","PD15", "PD10";
allwinner,function = "gpio_in";
allwinner,muxsel = <0>;
drive-strength = <10>;
};
st7789v: st7789v@0 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "sitronix,st7789v";
status = "okay";
reg = <0>;
spi-max-frequency = <50000000>;
rgb;
buswidth = <8>;
rotate = <90>;
fps = <60>;
spi-cpol;
spi-cpha;
reset-gpios = <&pio PB 3 GPIO_ACTIVE_HIGH>;
dc-gpios = <&pio PD 22 GPIO_ACTIVE_LOW>;
//debug = <1>;
};
打包debian文件系统为ext4格式
# generate a empty file, size :1024MB
dd if=/dev/zero of=rootfs.ext2 bs=1M count=2048
# pack rootfs into the ext2 file
sudo mke2fs -t ext2 -d ./rootfs -r 0 -L rootfs -O ^64bit -m 5 rootfs.ext2
# ext2 to ext4
sudo tune2fs -O extents,has_journal,large_file,huge_file ./rootfs.ext2
使用buildroot的genimage工具，重新打包sd卡镜像
# 在 out/images 目录下
../host/bin/genimage --config ./genimage.cfg --rootpath=$PWD/../target --inputpath=$PWD --mcopy=../host/bin/mcopy --outputpath=$PWD
注意： 此环境基于百问网 t113 buildroot工程
# <file system> <mount pt> <type> <options> <dump> <pass>
/dev/root / ext2 rw,noauto 0 1
/dev/mmcblk0p4 /boot vfat rw,defaults 0 0
proc /proc proc defaults 0 0
devpts /dev/pts devpts defaults,gid=5,mode=620,ptmxmode=0666 0 0
tmpfs /dev/shm tmpfs mode=0777 0 0
tmpfs /tmp tmpfs mode=1777 0 0
tmpfs /run tmpfs mode=0755,nosuid,nodev 0 0
sysfs /sys sysfs defaults 0 0
/swap swap swap defaults 0 0
重新刷入sd卡
Disk /dev/sda：29.12 GiB，31266439168 字节，61067264 个扇区
Disk model: MassStorageClass
单元：扇区 / 1 * 512 = 512 字节
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节
磁盘标签类型：gpt
磁盘标识符：6B54CC89-E5AB-40E4-8552-38ED1A926CCD
设备 起点 末尾 扇区 大小 类型
/dev/sda1 35392 39487 4096 2M Linux 文件系统
/dev/sda2 39488 39743 256 128K Linux 文件系统
/dev/sda3 39744 39999 256 128K Linux 文件系统
/dev/sda4 40000 105535 65536 32M Linux 文件系统
/dev/sda5 105536 4299839 4194304 2G Linux 文件系统
/dev/sda6 4299840 4824127 524288 256M Linux 文件系统
# fdisk -l
Disk /dev/mmcblk0: 29 GB, 31266439168 bytes, 61067264 sectors
954176 cylinders, 4 heads, 16 sectors/track
Units: sectors of 1 * 512 = 512 bytes
Device Boot StartCHS EndCHS StartLBA EndLBA Sectors Size Id Type
/dev/mmcblk0p1 * 2,124,59 6,145,11 40000 105535 65536 32.0M c Win95 FAT32 (LBA)
/dev/mmcblk0p2 6,145,12 267,166,27 105536 4299839 4194304 2048M 83 Linux
/dev/mmcblk0p3 267,166,28 300,73,29 4299840 4824127 524288 256M c Win95 FAT32 (LBA)
/dev/mmcblk0p4 0,0,2 0,33,1 1 2079 2079 1039K ee EFI GPT
[PATCH]
From 5a2693e6c4d189d802e1e72d5dfb7c0631815361 Mon Sep 17 00:00:00 2001
From: huazheng <huazheng@keyirobot.com>
Date: Fri, 14 Apr 2023 18:15:33 +0800
Subject: [PATCH] patch fbtft to support 240x280 st7789v tft lcd
Signed-off-by: huazheng <huazheng@keyirobot.com>
---
drivers/staging/fbtft/fb_st7789v.c | 50 +++++++++++++++++++++++++-
drivers/staging/fbtft/fbtft-core.c | 58 ++++++++++++++++++++++++++++--
2 files changed, 105 insertions(+), 3 deletions(-)
diff --git a/drivers/staging/fbtft/fb_st7789v.c b/drivers/staging/fbtft/fb_st7789v.c
index 3c3f38793..939cc508b 100644
--- a/drivers/staging/fbtft/fb_st7789v.c
+++ b/drivers/staging/fbtft/fb_st7789v.c
@@ -74,6 +74,7 @@ enum st7789v_command {
*
* Return: 0 on success, < 0 if error occurred.
*/
+#if 0
static int init_display(struct fbtft_par *par)
{
/* turn off sleep mode */
@@ -122,6 +123,53 @@ static int init_display(struct fbtft_par *par)
write_reg(par, MIPI_DCS_SET_DISPLAY_ON);
return 0;
}
+#else
+static int init_display(struct fbtft_par *par)
+{
+ int rc;
+
+ par->fbtftops.reset(par);
+ mdelay(100);
+
+ write_reg(par, 0x11); //Sleep out
+ mdelay(120); //Delay 120ms
+
+ //************* Start Initial Sequence **********//
+ write_reg(par, 0x36, 0x00);
+
+ write_reg(par, 0x3A, 0x05);
+
+ write_reg(par, 0xB2,0x0C,0x0C,0x00,0x33,0x33);
+
+ write_reg(par, 0xB7,0x35);
+
+ /* VCOM = 1.35V */
+ write_reg(par, 0xBB, 0x32);
+
+ write_reg(par, 0xC2, 0x01);
+
+ /* GVDD = 4.8V */
+ write_reg(par, 0xC3,0x15);
+
+ /* VDX = 0V */
+ write_reg(par, 0xC4, 0x20);
+
+ /* FPS = 60Hz */
+ write_reg(par, 0xC6,0x0F);
+
+ write_reg(par, 0xD0, 0xA4, 0xA1);
+
+ write_reg(par, 0xE0,0xD0,0x08,0x0E,0x09,0x09,0x05,0x31,0x33,0x48,0x17,0x14,0x15,0x31,0x34);
+
+ write_reg(par, 0xE1,0xD0,0x08,0x0E,0x09,0x09,0x15,0x31,0x33,0x48,0x17,0x14,0x15,0x31,0x34);
+
+ write_reg(par, MIPI_DCS_ENTER_INVERT_MODE);
+
+ write_reg(par, MIPI_DCS_SET_DISPLAY_ON);
+
+ return 0;
+}
+#endif
/**
* set_var() - apply LCD properties like rotation and BGR mode
@@ -231,7 +279,7 @@ static int blank(struct fbtft_par *par, bool on)
static struct fbtft_display display = {
.regwidth = 8,
.width = 240,
- .height = 320,
+ .height = 280,
.gamma_num = 2,
.gamma_len = 14,
.gamma = DEFAULT_GAMMA,
diff --git a/drivers/staging/fbtft/fbtft-core.c b/drivers/staging/fbtft/fbtft-core.c
index 61f0286fb..27b9bc7b3 100644
--- a/drivers/staging/fbtft/fbtft-core.c
+++ b/drivers/staging/fbtft/fbtft-core.c
@@ -24,6 +24,7 @@
#include <linux/platform_device.h>
#include <linux/spinlock.h>
#include <linux/of.h>
+#include <linux/of_gpio.h>
#include <video/mipi_display.h>
#include "fbtft.h"
@@ -71,6 +72,7 @@ void fbtft_dbg_hex(const struct device *dev, int groupsize,
EXPORT_SYMBOL(fbtft_dbg_hex);
#ifdef CONFIG_OF
+#if 0
static int fbtft_request_one_gpio(struct fbtft_par *par,
const char *name, int index,
struct gpio_desc **gpiop)
@@ -91,6 +93,39 @@ static int fbtft_request_one_gpio(struct fbtft_par *par,
return ret;
}
+#else
+static int fbtft_request_one_gpio(struct fbtft_par *par,
+ const char *name, int index,
+ struct gpio_desc **gpiop)
+{
+ int ret, gpio;
+ struct device *dev = par->info->device;
+ struct device_node *np = dev->of_node;
+ enum of_gpio_flags flags;
+
+ /* Get GPIO from device tree */
+ gpio = of_get_named_gpio_flags(np, name, index, &flags);
+ if (gpio < 0) {
+ return 0;
+ }
+
+
+ ret = devm_gpio_request_one(dev, gpio,
+ (flags & OF_GPIO_ACTIVE_LOW)?GPIOF_OUT_INIT_LOW:GPIOF_OUT_INIT_HIGH,
+ dev->driver->name);
+ if (ret) {
+ dev_err(dev, "Failed to request %s GPIO%d\n", name, gpio);
+ return -ENODEV;
+ }
+
+ *gpiop = gpio_to_desc(gpio);
+
+ fbtft_par_dbg(DEBUG_REQUEST_GPIOS, par, "%s: '%s' GPIO%d\n",
+ __func__, name, gpio);
+
+ return ret;
+}
+#endif
static int fbtft_request_gpios_dt(struct fbtft_par *par)
{
@@ -100,10 +135,10 @@ static int fbtft_request_gpios_dt(struct fbtft_par *par)
if (!par->info->device->of_node)
return -EINVAL;
- ret = fbtft_request_one_gpio(par, "reset", 0, &par->gpio.reset);
+ ret = fbtft_request_one_gpio(par, "reset-gpios", 0, &par->gpio.reset);
if (ret)
return ret;
- ret = fbtft_request_one_gpio(par, "dc", 0, &par->gpio.dc);
+ ret = fbtft_request_one_gpio(par, "dc-gpios", 0, &par->gpio.dc);
if (ret)
return ret;
ret = fbtft_request_one_gpio(par, "rd", 0, &par->gpio.rd);
@@ -217,6 +252,8 @@ EXPORT_SYMBOL(fbtft_unregister_backlight);
static void fbtft_set_addr_win(struct fbtft_par *par, int xs, int ys, int xe,
int ye)
{
+ xs = xs + 20;
+ xe = xe + 20;
write_reg(par, MIPI_DCS_SET_COLUMN_ADDRESS,
(xs >> 8) & 0xFF, xs & 0xFF, (xe >> 8) & 0xFF, xe & 0xFF);
@@ -226,6 +263,7 @@ static void fbtft_set_addr_win(struct fbtft_par *par, int xs, int ys, int xe,
write_reg(par, MIPI_DCS_WRITE_MEMORY_START);
}
+#if 0
static void fbtft_reset(struct fbtft_par *par)
{
if (!par->gpio.reset)
@@ -236,6 +274,22 @@ static void fbtft_reset(struct fbtft_par *par)
gpiod_set_value_cansleep(par->gpio.reset, 0);
msleep(120);
}
+#else
+static void fbtft_reset(struct fbtft_par *par)
+{
+ if (!par->gpio.reset)
+ return;
+
+ fbtft_par_dbg(DEBUG_RESET, par, "%s()\n", __func__);
+
+ gpiod_set_value_cansleep(par->gpio.reset, 1);
+ usleep_range(20, 40);
+ gpiod_set_value_cansleep(par->gpio.reset, 0); /* Low level reset */
+ msleep(120);
+
+ gpiod_set_value_cansleep(par->gpio.reset, 1); /* Activate chip */
+}
+#endif
static void fbtft_update_display(struct fbtft_par *par, unsigned int start_line,
unsigned int end_line)
--
2.40.0