1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * (C) Copyright 2008 - 2013 Tensilica Inc.
3*4882a593Smuzhiyun * (C) Copyright 2014 - 2016 Cadence Design Systems Inc.
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun /*
9*4882a593Smuzhiyun * CPU specific code
10*4882a593Smuzhiyun */
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun #include <common.h>
13*4882a593Smuzhiyun #include <command.h>
14*4882a593Smuzhiyun #include <linux/stringify.h>
15*4882a593Smuzhiyun #include <asm/global_data.h>
16*4882a593Smuzhiyun #include <asm/cache.h>
17*4882a593Smuzhiyun #include <asm/string.h>
18*4882a593Smuzhiyun #include <asm/misc.h>
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun DECLARE_GLOBAL_DATA_PTR;
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun gd_t *gd __attribute__((section(".data")));
23*4882a593Smuzhiyun
24*4882a593Smuzhiyun #if defined(CONFIG_DISPLAY_CPUINFO)
25*4882a593Smuzhiyun /*
26*4882a593Smuzhiyun * Print information about the CPU.
27*4882a593Smuzhiyun */
28*4882a593Smuzhiyun
print_cpuinfo(void)29*4882a593Smuzhiyun int print_cpuinfo(void)
30*4882a593Smuzhiyun {
31*4882a593Smuzhiyun char buf[120], mhz[8];
32*4882a593Smuzhiyun uint32_t id0, id1;
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun asm volatile ("rsr %0, 176\n"
35*4882a593Smuzhiyun "rsr %1, 208\n"
36*4882a593Smuzhiyun : "=r"(id0), "=r"(id1));
37*4882a593Smuzhiyun
38*4882a593Smuzhiyun sprintf(buf, "CPU: Xtensa %s (id: %08x:%08x) at %s MHz\n",
39*4882a593Smuzhiyun XCHAL_CORE_ID, id0, id1, strmhz(mhz, gd->cpu_clk));
40*4882a593Smuzhiyun puts(buf);
41*4882a593Smuzhiyun return 0;
42*4882a593Smuzhiyun }
43*4882a593Smuzhiyun #endif
44*4882a593Smuzhiyun
arch_cpu_init(void)45*4882a593Smuzhiyun int arch_cpu_init(void)
46*4882a593Smuzhiyun {
47*4882a593Smuzhiyun gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
48*4882a593Smuzhiyun return 0;
49*4882a593Smuzhiyun }
50*4882a593Smuzhiyun
dram_init(void)51*4882a593Smuzhiyun int dram_init(void)
52*4882a593Smuzhiyun {
53*4882a593Smuzhiyun return 0;
54*4882a593Smuzhiyun }
55