1 // SPDX-License-Identifier: GPL-2.0-or-later
2 // Copyright (C) ASPEED Technology Inc.
5 #include <linux/of_address.h>
10 #define BOOT_ADDR 0x00
13 static struct device_node *secboot_node;
15 static int aspeed_g6_boot_secondary(unsigned int cpu, struct task_struct *idle)
19 base = of_iomap(secboot_node, 0);
21 pr_err("could not map the secondary boot base!");
25 writel_relaxed(0, base + BOOT_ADDR);
26 writel_relaxed(__pa_symbol(secondary_startup_arm), base + BOOT_ADDR);
27 writel_relaxed((0xABBAAB00 | (cpu & 0xff)), base + BOOT_SIG);
36 static void __init aspeed_g6_smp_prepare_cpus(unsigned int max_cpus)
40 secboot_node = of_find_compatible_node(NULL, NULL, "aspeed,ast2600-smpmem");
42 pr_err("secboot device node found!!\n");
46 base = of_iomap(secboot_node, 0);
48 pr_err("could not map the secondary boot base!");
51 __raw_writel(0xBADABABA, base + BOOT_SIG);
56 static const struct smp_operations aspeed_smp_ops __initconst = {
57 .smp_prepare_cpus = aspeed_g6_smp_prepare_cpus,
58 .smp_boot_secondary = aspeed_g6_boot_secondary,
61 CPU_METHOD_OF_DECLARE(aspeed_smp, "aspeed,ast2600-smp", &aspeed_smp_ops);