T113 Tina Linux 禁用 OPTEE 启动

[YuzukiTsuru]

1. 在 device/config/chips/t113/configs/<aaa>/ 新建一个 boot_package.cfg

写入以下内容

[package]
item=u-boot, u-boot.fex
item=dtb,    sunxi.fex

2. 找到 lichee/linux-5.4/arch/arm/boot/dts/sun8iw20p1.dtsi 中的 psci 节点把他删了

psci {
	compatible = "arm,psci-1.0";
	method = "smc";
};

3. 打开 lichee/linux-5.4/arch/arm/mach-sunxi/platsmp.c 文件，在末尾加入下列内容

static int sun8i_t113_smp_boot_secondary(unsigned int cpu,
				    struct task_struct *idle)
{
    u32 reg;
    void __iomem *cpucfg_membase = ioremap(0x09010000, 0x10);
    void __iomem *cpuexec_membase[] = {ioremap(0x070005C4, 0x10),ioremap(0x070005C8, 0x10)};
	
	if (cpu != 1)
	    return 0;

	spin_lock(&cpu_lock);

	writel(__pa_symbol(secondary_startup),	cpuexec_membase[cpu]);

	reg = readl(cpucfg_membase);
	writel(reg | BIT(cpu), cpucfg_membase);

	spin_unlock(&cpu_lock);

	return 0;
}

static const struct smp_operations sun8i_t113_smp_ops __initconst = {
	.smp_boot_secondary	= sun8i_t113_smp_boot_secondary,
};
CPU_METHOD_OF_DECLARE(sun8i_t113_smp, "allwinner,sun8iw20p1", &sun8i_t113_smp_ops);

[tigger]

OPTEE 用来干嘛的呢？