/*******************************************************************************
*函数名称: Boot0_C_part
*函数原型：void Boot0_C_part( void )
*函数功能: Boot0中用C语言编写的部分的主流程
*入口参数: void
*返 回 值: void
*备 注:
*******************************************************************************/
void Boot0_C_part( void )
{
__u32 status;
__s32 dram_size;
int index = 0;
int ddr_aotu_scan = 0;
volatile unsigned int *reg_addr = 0;
// move_RW( );
clear_ZI( );
bias_calibration();
timer_init();
UART_open( BT0_head.prvt_head.uart_port, (void *)BT0_head.prvt_head.uart_ctrl, 24*1000*1000 );
//odt_status = check_odt(5);
if( BT0_head.prvt_head.enable_jtag )
{
jtag_init( (normal_gpio_cfg *)BT0_head.prvt_head.jtag_gpio );
}
msg("HELLO! BOOT0 is starting!\n");
print_version();
{
__u32 reg_val;
__u32 fel_flag;
fel_flag = *(volatile unsigned int *)(0x01f00000 + 0x108);
//print smp status.
index = 0;
while(index < 0x18)
{
reg_addr = (volatile unsigned int *)(0x01f00000 + 0x100 + index);
reg_val = *reg_addr;
*reg_addr = 0;
msg("reg_addr %x =%x\n", reg_addr, reg_val);
index+=0x4;
}
// reg_val = *(volatile unsigned int *)(0x01f00000 + 0x108);
// *(volatile unsigned int *)(0x01f00000 + 0x108) = 0;
// msg("fel_flag=%x\n", fel_flag);
if(fel_flag == 0x5AA5A55A)
{
msg("eraly jump fel\n");
pll_reset();
__msdelay(10);
jump_to( FEL_BASE );
}
}
mmu_system_init(EGON2_DRAM_BASE, 1 * 1024, EGON2_MMU_BASE);
mmu_enable();
//dram_size = init_DRAM(BT0_head.boot_head.platform[7]); // 初始化DRAM
//#ifdef CONFIG_SUN6I_FPGA
// ddr_aotu_scan = 1;
// msg("config fpga\n");
//#else
// ddr_aotu_scan = BT0_head.boot_head.platform[7];
// msg("not config fpga\n");
//#endif
ddr_aotu_scan = 0;
#ifdef DEBUG
{
int k;
for(k=0;k<16;k++)
{
msg("%x\n", BT0_head.prvt_head.dram_para[k]);
}
}
#endif
// msg("------------before------------\n");
// dram_para_display();
dram_size = init_DRAM(ddr_aotu_scan, (void *)BT0_head.prvt_head.dram_para);
if(dram_size)
{
mdfs_save_value((void *)BT0_head.prvt_head.dram_para);
msg("dram size =%d\n", dram_size);
}
else
{
msg("initializing SDRAM Fail.\n");
mmu_disable( );
pll_reset();
__msdelay(10);
jump_to( FEL_BASE );
}
// {
// __u32 reg_val;
//
// reg_val = *(volatile __u32 *)(0x1c20d20);
// *(volatile __u32 *)(0x1c20d20) = 0;
// msg("reg_val=%x, %x\n", reg_val, *(volatile __u32 *)(0x1c20d24));
// if(reg_val & 0x01)
// {
// mmu_disable( );
// jump_to( 0x40100000 );
// }
// }
// msg("------------end------------\n");
// dram_para_display();
#if SYS_STORAGE_MEDIA_TYPE == SYS_STORAGE_MEDIA_NAND_FLASH
status = load_Boot1_from_nand( ); // 载入Boot1
#elif SYS_STORAGE_MEDIA_TYPE == SYS_STORAGE_MEDIA_SPI_NOR_FLASH
status = load_boot1_from_spinor( ); // 载入Boot1
#elif SYS_STORAGE_MEDIA_TYPE == SYS_STORAGE_MEDIA_SD_CARD
status = load_boot1_from_sdmmc( (char *)BT0_head.prvt_head.storage_data ); // 载入boot1
#else
#error The storage media of Boot1 has not been defined.
#endif
msg("Ready to disable icache.\n");
mmu_disable( ); // disable instruction cache
if( status == OK )
{
// restart_watch_dog( ); // restart watch dog
//跳转boot1之前，把dram的大小写进去
//set_dram_size(dram_size );
//跳转之前，把所有的dram参数写到boot1中
set_dram_para((void *)&BT0_head.prvt_head.dram_para, dram_size);
msg("Succeed in loading Boot1.\n"
"Jump to Boot1.\n");
jump_to( BOOT1_BASE ); // 如果载入Boot1成功，跳转到Boot1处执行
}
else
{
// disable_watch_dog( ); // disable watch dog
msg("Fail in loading Boot1.\n"
"Jump to Fel.\n");
pll_reset();
__msdelay(10);
jump_to( FEL_BASE ); // 如果载入Boot1失败，将控制权交给Fel
}
}
/*******************************************************************************
*函数名称: Boot0_C_part
*函数原型：void Boot0_C_part( void )
*函数功能: Boot0中用C语言编写的部分的主流程
*入口参数: void
*返 回 值: void
*备 注:
*******************************************************************************/
void main( void )
{
__u32 status;
__s32 dram_size;
int ddr_aotu_scan = 0;
int pwr_en = 0;
__u32 fel_flag;
__u32 boot_cpu=0;
bias_calibration();
timer_init();
sunxi_serial_init( BT0_head.prvt_head.uart_port, (void *)BT0_head.prvt_head.uart_ctrl, 6 );
if( BT0_head.prvt_head.enable_jtag )
{
boot_set_gpio((normal_gpio_cfg *)BT0_head.prvt_head.jtag_gpio, 6, 1);
}
printf("HELLO! BOOT0 is starting!\n");
print_version();
#ifdef CONFIG_ARCH_SUN7I
reset_cpux(1);
#endif
fel_flag = rtc_region_probe_fel_flag();
if(fel_flag == SUNXI_RUN_EFEX_FLAG)
{
rtc_region_clear_fel_flag();
printf("eraly jump fel\n");
goto __boot0_entry_err0;
}
#ifdef CONFIG_BOOT_A15
// printf("BT0_head.boot_head.boot_cpu=0x%x\n", BT0_head.boot_head.boot_cpu);
// if(BT0_head.boot_head.boot_cpu)
// {
// fel_flag = BOOT_A7_FLAG;
// }
// else
// {
// fel_flag = BOOT_A15_FLAG;
// }
/*
boot_cpu 含义
bit0~7 bit8~15
0:不需要保存标志位 1:当前应该切换a15启动
1:通知u-boot保存 0:当前应该切换a7启动
每次从brom读取的boot_cpu只能是0x100或者0
*/
boot_cpu = BT0_head.boot_head.boot_cpu;
pwr_en = BT0_head.boot_head.pwr_en;
if(fel_flag == BOOT_A15_FLAG)
{
rtc_region_clear_fel_flag();
if(boot_cpu == 0x00) //如果原本是a7启动
boot_cpu = 0x101; //a15启动，需要保存标志位
switch_to_a15(pwr_en);
}
else if(fel_flag == BOOT_A7_FLAG)
{
rtc_region_clear_fel_flag();
if(boot_cpu == 0x100) //如果原本是a15启动
boot_cpu = 0x01; //a7启动，需要保存标志位
}
else
{
if(boot_cpu == 0x100)
{
switch_to_a15(pwr_en); //a15启动，不需要保存标志位
}
else
{
boot_cpu = 0x0; //a7启动，不需要保存标志位
}
}
// printf("BT0_head.boot_head.boot_cpu=0x%x\n", BT0_head.boot_head.boot_cpu);
#endif
mmu_setup();
ddr_aotu_scan = 0;
dram_size = init_DRAM(ddr_aotu_scan, (void *)BT0_head.prvt_head.dram_para);
if(dram_size)
{
//mdfs_save_value();
printf("dram size =%d\n", dram_size);
}
else
{
printf("initializing SDRAM Fail.\n");
goto __boot0_entry_err;
}
#if defined(CONFIG_ARCH_SUN9IW1P1)
__msdelay(100);
#endif
#ifdef CONFIG_ARCH_SUN7I
check_super_standby_flag();
#endif
status = load_boot1();
printf("Ready to disable icache.\n");
mmu_turn_off( ); // disable instruction cache
if( status == 0 )
{
//跳转之前，把所有的dram参数写到boot1中
set_dram_para((void *)&BT0_head.prvt_head.dram_para, dram_size, boot_cpu);
printf("Jump to secend Boot.\n");
boot0_jump(CONFIG_SYS_TEXT_BASE); // 如果载入Boot1成功，跳转到Boot1处执行
}
__boot0_entry_err:
#ifdef CONFIG_BOOT_A15
if(!(boot_cpu & 0xff00))
{
boot0_clear_env();
boot0_jump(FEL_BASE);
}
else
{
rtc_region_set_flag(SUNXI_RUN_EFEX_FLAG);
boot0_clear_env();
watchdog_enable();
}
#endif
__boot0_entry_err0:
boot0_clear_env();
boot0_jump(FEL_BASE);
}
