avionic design with actual uboot and tooling

submodule of avionic design uboot bootloader and with included tools to
get you started , read readme.md and readme-tk1-loader.md

u-boot/arch/arm/mach-sunxi/cpu_info.c

@@ -0,0 +1,116 @@
+/*
+ * (C) Copyright 2007-2011
+ * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
+ * Tom Cubie <tangliang@allwinnertech.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/clock.h>
+#include <axp_pmic.h>
+#include <errno.h>
+
+#ifdef CONFIG_MACH_SUN6I
+int sunxi_get_ss_bonding_id(void)
+{
+	struct sunxi_ccm_reg * const ccm =
+		(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+	static int bonding_id = -1;
+
+	if (bonding_id != -1)
+		return bonding_id;
+
+	/* Enable Security System */
+	setbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_SS);
+	setbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_SS);
+
+	bonding_id = readl(SUNXI_SS_BASE);
+	bonding_id = (bonding_id >> 16) & 0x7;
+
+	/* Disable Security System again */
+	clrbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_SS);
+	clrbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_SS);
+
+	return bonding_id;
+}
+#endif
+
+#ifdef CONFIG_MACH_SUN8I
+uint sunxi_get_sram_id(void)
+{
+	uint id;
+
+	/* Unlock sram info reg, read it, relock */
+	setbits_le32(SUNXI_SRAMC_BASE + 0x24, (1 << 15));
+	id = readl(SUNXI_SRAMC_BASE + 0x24) >> 16;
+	clrbits_le32(SUNXI_SRAMC_BASE + 0x24, (1 << 15));
+
+	return id;
+}
+#endif
+
+#ifdef CONFIG_DISPLAY_CPUINFO
+int print_cpuinfo(void)
+{
+#ifdef CONFIG_MACH_SUN4I
+	puts("CPU:   Allwinner A10 (SUN4I)\n");
+#elif defined CONFIG_MACH_SUN5I
+	u32 val = readl(SUNXI_SID_BASE + 0x08);
+	switch ((val >> 12) & 0xf) {
+	case 0: puts("CPU:   Allwinner A12 (SUN5I)\n"); break;
+	case 3: puts("CPU:   Allwinner A13 (SUN5I)\n"); break;
+	case 7: puts("CPU:   Allwinner A10s (SUN5I)\n"); break;
+	default: puts("CPU:   Allwinner A1X (SUN5I)\n");
+	}
+#elif defined CONFIG_MACH_SUN6I
+	switch (sunxi_get_ss_bonding_id()) {
+	case SUNXI_SS_BOND_ID_A31:
+		puts("CPU:   Allwinner A31 (SUN6I)\n");
+		break;
+	case SUNXI_SS_BOND_ID_A31S:
+		puts("CPU:   Allwinner A31s (SUN6I)\n");
+		break;
+	default:
+		printf("CPU:   Allwinner A31? (SUN6I, id: %d)\n",
+		       sunxi_get_ss_bonding_id());
+	}
+#elif defined CONFIG_MACH_SUN7I
+	puts("CPU:   Allwinner A20 (SUN7I)\n");
+#elif defined CONFIG_MACH_SUN8I_A23
+	printf("CPU:   Allwinner A23 (SUN8I %04x)\n", sunxi_get_sram_id());
+#elif defined CONFIG_MACH_SUN8I_A33
+	printf("CPU:   Allwinner A33 (SUN8I %04x)\n", sunxi_get_sram_id());
+#elif defined CONFIG_MACH_SUN8I_A83T
+	printf("CPU:   Allwinner A83T (SUN8I %04x)\n", sunxi_get_sram_id());
+#elif defined CONFIG_MACH_SUN8I_H3
+	printf("CPU:   Allwinner H3 (SUN8I %04x)\n", sunxi_get_sram_id());
+#elif defined CONFIG_MACH_SUN9I
+	puts("CPU:   Allwinner A80 (SUN9I)\n");
+#elif defined CONFIG_MACH_SUN50I
+	puts("CPU:   Allwinner A64 (SUN50I)\n");
+#else
+#warning Please update cpu_info.c with correct CPU information
+	puts("CPU:   SUNXI Family\n");
+#endif
+	return 0;
+}
+#endif
+
+int sunxi_get_sid(unsigned int *sid)
+{
+#ifdef CONFIG_AXP221_POWER
+	return axp_get_sid(sid);
+#elif defined SUNXI_SID_BASE
+	int i;
+
+	for (i = 0; i< 4; i++)
+		sid[i] = readl((ulong)SUNXI_SID_BASE + 4 * i);
+
+	return 0;
+#else
+	return -ENODEV;
+#endif
+}