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 "vexpress.h" 7 8 #define SYS_FLAGSSET 0x030 9 #define SYS_FLAGSCLR 0x034 10 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