1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/of.h>
3 #include <linux/of_address.h>
4 #include <asm/mach/arch.h>
5 
6 #include "core.h"
7 
8 #define SYS_FLAGSSET		0x030
9 #define SYS_FLAGSCLR		0x034
10 
vexpress_flags_set(u32 data)11 void vexpress_flags_set(u32 data)
12 {
13 	static void __iomem *base;
14 
15 	if (!base) {
16 		struct device_node *node = of_find_compatible_node(NULL, NULL,
17 				"arm,vexpress-sysreg");
18 
19 		base = of_iomap(node, 0);
20 	}
21 
22 	if (WARN_ON(!base))
23 		return;
24 
25 	writel(~0, base + SYS_FLAGSCLR);
26 	writel(data, base + SYS_FLAGSSET);
27 }
28 
29 static const char * const v2m_dt_match[] __initconst = {
30 	"arm,vexpress",
31 	NULL,
32 };
33 
34 DT_MACHINE_START(VEXPRESS_DT, "ARM-Versatile Express")
35 	.dt_compat	= v2m_dt_match,
36 	.l2c_aux_val	= 0x00400000,
37 	.l2c_aux_mask	= 0xfe0fffff,
38 	.smp		= smp_ops(vexpress_smp_dt_ops),
39 	.smp_init	= smp_init_ops(vexpress_smp_init_ops),
40 MACHINE_END
41