1 /*
2 * xen/arch/arm/platforms/rcar2.c
3 *
4 * Renesas R-Car Gen2 specific settings
5 *
6 * Iurii Konovalenko <iurii.konovalenko@globallogic.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 */
18
19 #include <xen/mm.h>
20 #include <xen/vmap.h>
21 #include <asm/platform.h>
22 #include <asm/io.h>
23
24 #define RCAR2_RAM_ADDR 0xE63C0000
25 #define RCAR2_RAM_SIZE 0x1000
26 #define RCAR2_SMP_START_OFFSET 0xFFC
27
rcar2_smp_init(void)28 static int __init rcar2_smp_init(void)
29 {
30 void __iomem *pram;
31
32 /* map ICRAM */
33 pram = ioremap_nocache(RCAR2_RAM_ADDR, RCAR2_RAM_SIZE);
34 if( !pram )
35 {
36 dprintk( XENLOG_ERR, "Unable to map RCAR2 ICRAM\n");
37 return -ENOMEM;
38 }
39
40 /* setup reset vectors */
41 writel(__pa(init_secondary), pram + RCAR2_SMP_START_OFFSET);
42 iounmap(pram);
43
44 sev();
45
46 return 0;
47 }
48
49 static const char *const rcar2_dt_compat[] __initconst =
50 {
51 "renesas,lager",
52 NULL
53 };
54
55 PLATFORM_START(rcar2, "Renesas R-Car Gen2")
56 .compatible = rcar2_dt_compat,
57 .cpu_up = cpu_up_send_sgi,
58 .smp_init = rcar2_smp_init,
59 PLATFORM_END
60
61 /*
62 * Local variables:
63 * mode: C
64 * c-file-style: "BSD"
65 * c-basic-offset: 4
66 * indent-tabs-mode: nil
67 * End:
68 */
69