1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2014-2016, Freescale Semiconductor, Inc.
4 */
5
6 #include <common.h>
7 #include <asm/io.h>
8 #include <asm/system.h>
9 #include <asm/armv8/mmu.h>
10 #include <asm/io.h>
11 #include <asm/arch/mc_me_regs.h>
12 #include "cpu.h"
13
cpu_mask(void)14 u32 cpu_mask(void)
15 {
16 return readl(MC_ME_CS);
17 }
18
19 #ifndef CONFIG_SYS_DCACHE_OFF
20
21 #define S32V234_IRAM_BASE 0x3e800000UL
22 #define S32V234_IRAM_SIZE 0x800000UL
23 #define S32V234_DRAM_BASE1 0x80000000UL
24 #define S32V234_DRAM_SIZE1 0x40000000UL
25 #define S32V234_DRAM_BASE2 0xC0000000UL
26 #define S32V234_DRAM_SIZE2 0x20000000UL
27 #define S32V234_PERIPH_BASE 0x40000000UL
28 #define S32V234_PERIPH_SIZE 0x40000000UL
29
30 static struct mm_region s32v234_mem_map[] = {
31 {
32 .virt = S32V234_IRAM_BASE,
33 .phys = S32V234_IRAM_BASE,
34 .size = S32V234_IRAM_SIZE,
35 .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
36 PTE_BLOCK_OUTER_SHARE
37 }, {
38 .virt = S32V234_DRAM_BASE1,
39 .phys = S32V234_DRAM_BASE1,
40 .size = S32V234_DRAM_SIZE1,
41 .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
42 PTE_BLOCK_OUTER_SHARE
43 }, {
44 .virt = S32V234_PERIPH_BASE,
45 .phys = S32V234_PERIPH_BASE,
46 .size = S32V234_PERIPH_SIZE,
47 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
48 PTE_BLOCK_NON_SHARE
49 /* TODO: Do we need these? */
50 /* | PTE_BLOCK_PXN | PTE_BLOCK_UXN */
51 }, {
52 .virt = S32V234_DRAM_BASE2,
53 .phys = S32V234_DRAM_BASE2,
54 .size = S32V234_DRAM_SIZE2,
55 .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL_NC) |
56 PTE_BLOCK_OUTER_SHARE
57 }, {
58 /* List terminator */
59 0,
60 }
61 };
62
63 struct mm_region *mem_map = s32v234_mem_map;
64
65 #endif
66
67 /*
68 * Return the number of cores on this SOC.
69 */
cpu_numcores(void)70 int cpu_numcores(void)
71 {
72 int numcores;
73 u32 mask;
74
75 mask = cpu_mask();
76 numcores = hweight32(cpu_mask());
77
78 /* Verify if M4 is deactivated */
79 if (mask & 0x1)
80 numcores--;
81
82 return numcores;
83 }
84
85 #if defined(CONFIG_ARCH_EARLY_INIT_R)
arch_early_init_r(void)86 int arch_early_init_r(void)
87 {
88 int rv;
89 asm volatile ("dsb sy");
90 rv = fsl_s32v234_wake_seconday_cores();
91
92 if (rv)
93 printf("Did not wake secondary cores\n");
94
95 asm volatile ("sev");
96 return 0;
97 }
98 #endif /* CONFIG_ARCH_EARLY_INIT_R */
99