summaryrefslogtreecommitdiff
path: root/arch/arm
diff options
context:
space:
mode:
authorMasahiro Yamada <yamada.masahiro@socionext.com>2020-02-14 20:54:42 +0900
committerMasahiro Yamada <yamada.masahiro@socionext.com>2020-02-28 02:40:56 +0900
commit2ba1d398d77202028290f5d2d4a28dc332b9129f (patch)
tree98a1b9da2e24699a8c18d1842c90b37d1a9f40eb /arch/arm
parent1320fa2e55d2180573fd48c71f097e1ec7dc4833 (diff)
ARM: uniphier: detect the base of micro support card at run-time
The base address 0x43f00000 is no longer true for the future SoC. Extract the base address from the device tree. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/mach-uniphier/micro-support-card.c43
1 files changed, 31 insertions, 12 deletions
diff --git a/arch/arm/mach-uniphier/micro-support-card.c b/arch/arm/mach-uniphier/micro-support-card.c
index 46879019fd..c71470a204 100644
--- a/arch/arm/mach-uniphier/micro-support-card.c
+++ b/arch/arm/mach-uniphier/micro-support-card.c
@@ -1,39 +1,58 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2012-2015 Panasonic Corporation
- * Copyright (C) 2015-2016 Socionext Inc.
+ * Copyright (C) 2015-2020 Socionext Inc.
* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
*/
#include <common.h>
+#include <dm/of.h>
+#include <fdt_support.h>
#include <linux/ctype.h>
#include <linux/io.h>
#include "micro-support-card.h"
-#define MICRO_SUPPORT_CARD_BASE 0x43f00000
-#define SMC911X_BASE ((MICRO_SUPPORT_CARD_BASE) + 0x00000)
-#define LED_BASE ((MICRO_SUPPORT_CARD_BASE) + 0x90000)
-#define NS16550A_BASE ((MICRO_SUPPORT_CARD_BASE) + 0xb0000)
-#define MICRO_SUPPORT_CARD_RESET ((MICRO_SUPPORT_CARD_BASE) + 0xd0034)
-#define MICRO_SUPPORT_CARD_REVISION ((MICRO_SUPPORT_CARD_BASE) + 0xd00E0)
+#define SMC911X_OFFSET 0x00000
+#define LED_OFFSET 0x90000
+#define NS16550A_OFFSET 0xb0000
+#define MICRO_SUPPORT_CARD_RESET 0xd0034
+#define MICRO_SUPPORT_CARD_REVISION 0xd00e0
static bool support_card_found;
+static void __iomem *support_card_base;
static void support_card_detect(void)
{
DECLARE_GLOBAL_DATA_PTR;
const void *fdt = gd->fdt_blob;
int offset;
+ u64 addr, addr2;
offset = fdt_node_offset_by_compatible(fdt, 0, "smsc,lan9118");
if (offset < 0)
return;
+ addr = fdt_get_base_address(fdt, offset);
+ if (addr == OF_BAD_ADDR)
+ return;
+ addr -= SMC911X_OFFSET;
+
offset = fdt_node_offset_by_compatible(fdt, 0, "ns16550a");
if (offset < 0)
return;
+ addr2 = fdt_get_base_address(fdt, offset);
+ if (addr2 == OF_BAD_ADDR)
+ return;
+ addr2 -= NS16550A_OFFSET;
+
+ /* sanity check */
+ if (addr != addr2)
+ return;
+
+ support_card_base = ioremap(addr, 0x100000);
+
support_card_found = true;
}
@@ -45,19 +64,19 @@ static void support_card_detect(void)
*/
static void support_card_reset_deassert(void)
{
- writel(0x00010000, MICRO_SUPPORT_CARD_RESET);
+ writel(0x00010000, support_card_base + MICRO_SUPPORT_CARD_RESET);
}
static void support_card_reset(void)
{
- writel(0x00020003, MICRO_SUPPORT_CARD_RESET);
+ writel(0x00020003, support_card_base + MICRO_SUPPORT_CARD_RESET);
}
static int support_card_show_revision(void)
{
u32 revision;
- revision = readl(MICRO_SUPPORT_CARD_REVISION);
+ revision = readl(support_card_base + MICRO_SUPPORT_CARD_REVISION);
revision &= 0xff;
/* revision 3.6.x card changed the revision format */
@@ -94,7 +113,7 @@ int board_eth_init(bd_t *bis)
if (!support_card_found)
return 0;
- return smc911x_initialize(0, SMC911X_BASE);
+ return smc911x_initialize(0, (unsigned long)support_card_base + SMC911X_OFFSET);
}
#endif
@@ -264,5 +283,5 @@ void led_puts(const char *s)
s++;
}
- writel(~val, LED_BASE);
+ writel(~val, support_card_base + LED_OFFSET);
}