luckfox-pico-sdk/sysdrv/source/mcu/rt-thread/libcpu/ia32/start_gcc.S
luckfox-eng29 8f34c2760d project:build.sh: Added fastboot support; custom modifications to U-Boot and kernel implemented using patches.
project:cfg:BoardConfig_IPC: Added fastboot BoardConfig file and firmware post-scripts, distinguishing between
the BoardConfigs for Luckfox Pico Pro and Luckfox Pico Max. project:app: Added fastboot_client and rk_smart_door
for quick boot applications; updated rkipc app to adapt to the latest media library. media:samples: Added more
usage examples. media:rockit: Fixed bugs; removed support for retrieving data frames from VPSS. media:isp:
Updated rkaiq library and related tools to support connection to RKISP_Tuner. sysdrv:Makefile: Added support for
compiling drv_ko on Luckfox Pico Ultra W using Ubuntu; added support for custom root filesystem.
sysdrv:tools:board: Updated Buildroot optional mirror sources, updated some software versions, and stored device
tree files and configuration files that undergo multiple modifications for U-Boot and kernel separately.
sysdrv:source:mcu: Used RISC-V MCU SDK with RT-Thread system, mainly for initializing camera AE during quick
boot. sysdrv:source:uboot: Added support for fastboot; added high baud rate DDR bin for serial firmware upgrades.
sysdrv:source:kernel: Upgraded to version 5.10.160; increased NPU frequency for RV1106G3; added support for
fastboot.

Signed-off-by: luckfox-eng29 <eng29@luckfox.com>
2024-10-14 09:47:04 +08:00

98 lines
1.7 KiB
ArmAsm

/*
* File : start.S
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2012, RT-Thread Development Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2006-09-15 QiuYi The first version.
* 2012-02-15 aozima update.
*/
/* the magic number for the multiboot header. */
#define MULTIBOOT_HEADER_MAGIC 0x1BADB002
/* the flags for the multiboot header. */
#define MULTIBOOT_HEADER_FLAGS 0x00000003
#define CONFIG_STACKSIZE 8192
/**
* @addtogroup I386
*/
/*@{*/
.section .init, "ax"
/* the system entry */
.globl _start
_start:
jmp multiboot_entry
/* Align 32 bits boundary. */
.align 4
/* multiboot header. */
multiboot_header:
/* magic */
.long MULTIBOOT_HEADER_MAGIC
/* flags */
.long MULTIBOOT_HEADER_FLAGS
/* checksum */
.long -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS)
multiboot_entry:
movl $(_end + 0x1000),%esp
/* reset eflags. */
pushl $0
popf
/*rebuild globe describe table*/
lgdt mygdtdesc
movl $0x10,%eax
movw %ax,%ds
movw %ax,%es
movw %ax,%ss
ljmp $0x08, $relocated
relocated:
/* push the pointer to the multiboot information structure. */
pushl %ebx
/* push the magic value. */
pushl %eax
call rtthread_startup
/* never get here */
spin:
hlt
jmp spin
.data
.p2align 2
mygdt:
.word 0,0,0,0
.word 0x07FF /* 8Mb - limit=2047 */
.word 0x0000
.word 0x9A00 /* code read/exec */
.word 0x00C0
.word 0x07FF /* 8Mb - limit=2047 */
.word 0x0000
.word 0x9200 /* data read/write */
.word 0x00C0
mygdtdesc:
.word 0x17
.long mygdt
/*@}*/