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ARM: keystone2: Cleanup SoC detection
[u-boot] / arch / arm / mach-uniphier / ph1-ld4 / sbc_init.c
1 /*
2  * Copyright (C) 2011-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
3  *
4  * SPDX-License-Identifier:     GPL-2.0+
5  */
6
7 #include <common.h>
8 #include <linux/io.h>
9 #include <mach/sbc-regs.h>
10 #include <mach/sg-regs.h>
11
12 void sbc_init(void)
13 {
14         u32 tmp;
15
16         /* system bus output enable */
17         tmp = readl(PC0CTRL);
18         tmp &= 0xfffffcff;
19         writel(tmp, PC0CTRL);
20
21         /*
22          * Only CS1 is connected to support card.
23          * BKSZ[1:0] should be set to "01".
24          */
25         writel(SBCTRL0_SAVEPIN_PERI_VALUE, SBCTRL10);
26         writel(SBCTRL1_SAVEPIN_PERI_VALUE, SBCTRL11);
27         writel(SBCTRL2_SAVEPIN_PERI_VALUE, SBCTRL12);
28         writel(SBCTRL4_SAVEPIN_PERI_VALUE, SBCTRL14);
29
30         if (boot_is_swapped()) {
31                 /*
32                  * Boot Swap On: boot from external NOR/SRAM
33                  * 0x02000000-0x03ffffff is a mirror of 0x00000000-0x01ffffff.
34                  *
35                  * 0x00000000-0x01efffff, 0x02000000-0x03efffff: memory bank
36                  * 0x01f00000-0x01ffffff, 0x03f00000-0x03ffffff: peripherals
37                  */
38                 writel(0x0000bc01, SBBASE0);
39         } else {
40                 /*
41                  * Boot Swap Off: boot from mask ROM
42                  * 0x00000000-0x01ffffff: mask ROM
43                  * 0x02000000-0x03efffff: memory bank (31MB)
44                  * 0x03f00000-0x03ffffff: peripherals (1MB)
45                  */
46                 writel(0x0000be01, SBBASE0); /* dummy */
47                 writel(0x0200be01, SBBASE1);
48         }
49 }