1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2008 - 2013 Tensilica Inc.
4 * (C) Copyright 2014 - 2016 Cadence Design Systems Inc.
5 */
6
7 /*
8 * CPU specific code
9 */
10
11 #include <common.h>
12 #include <command.h>
13 #include <vsprintf.h>
14 #include <linux/stringify.h>
15 #include <asm/global_data.h>
16 #include <asm/cache.h>
17 #include <asm/string.h>
18 #include <asm/misc.h>
19
20 DECLARE_GLOBAL_DATA_PTR;
21
22 gd_t *gd __attribute__((section(".data")));
23
24 #if defined(CONFIG_DISPLAY_CPUINFO)
25 /*
26 * Print information about the CPU.
27 */
28
print_cpuinfo(void)29 int print_cpuinfo(void)
30 {
31 char buf[120], mhz[8];
32 uint32_t id0, id1;
33
34 asm volatile ("rsr %0, 176\n"
35 "rsr %1, 208\n"
36 : "=r"(id0), "=r"(id1));
37
38 sprintf(buf, "CPU: Xtensa %s (id: %08x:%08x) at %s MHz\n",
39 XCHAL_CORE_ID, id0, id1, strmhz(mhz, gd->cpu_clk));
40 puts(buf);
41 return 0;
42 }
43 #endif
44
arch_cpu_init(void)45 int arch_cpu_init(void)
46 {
47 gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
48 return 0;
49 }
50
dram_init(void)51 int dram_init(void)
52 {
53 return 0;
54 }
55