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ARM: uniphier: detect the base of micro support card at run-time

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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>
This commit is contained in:
Masahiro Yamada 2020-02-14 20:54:42 +09:00
parent 1320fa2e55
commit 2ba1d398d7
1 changed files with 31 additions and 12 deletions
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43
arch/arm/mach-uniphier/micro-support-card.c
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@ -1,39 +1,58 @@
// SPDX-License-Identifier: GPL-2.0+ // SPDX-License-Identifier: GPL-2.0+
/* /*
* Copyright (C) 2012-2015 Panasonic Corporation * 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> * Author: Masahiro Yamada <yamada.masahiro@socionext.com>
*/ */
#include <common.h> #include <common.h>
#include <dm/of.h>
#include <fdt_support.h>
#include <linux/ctype.h> #include <linux/ctype.h>
#include <linux/io.h> #include <linux/io.h>
#include "micro-support-card.h" #include "micro-support-card.h"
#define MICRO_SUPPORT_CARD_BASE 0x43f00000 #define SMC911X_OFFSET 0x00000
#define SMC911X_BASE ((MICRO_SUPPORT_CARD_BASE) + 0x00000) #define LED_OFFSET 0x90000
#define LED_BASE ((MICRO_SUPPORT_CARD_BASE) + 0x90000) #define NS16550A_OFFSET 0xb0000
#define NS16550A_BASE ((MICRO_SUPPORT_CARD_BASE) + 0xb0000) #define MICRO_SUPPORT_CARD_RESET 0xd0034
#define MICRO_SUPPORT_CARD_RESET ((MICRO_SUPPORT_CARD_BASE) + 0xd0034) #define MICRO_SUPPORT_CARD_REVISION 0xd00e0
#define MICRO_SUPPORT_CARD_REVISION ((MICRO_SUPPORT_CARD_BASE) + 0xd00E0)
static bool support_card_found; static bool support_card_found;
static void __iomem *support_card_base;
static void support_card_detect(void) static void support_card_detect(void)
{ {
DECLARE_GLOBAL_DATA_PTR; DECLARE_GLOBAL_DATA_PTR;
const void *fdt = gd->fdt_blob; const void *fdt = gd->fdt_blob;
int offset; int offset;
u64 addr, addr2;
offset = fdt_node_offset_by_compatible(fdt, 0, "smsc,lan9118"); offset = fdt_node_offset_by_compatible(fdt, 0, "smsc,lan9118");
if (offset < 0) if (offset < 0)
return; 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"); offset = fdt_node_offset_by_compatible(fdt, 0, "ns16550a");
if (offset < 0) if (offset < 0)
return; 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; support_card_found = true;
} }
@ -45,19 +64,19 @@ static void support_card_detect(void)
*/ */
static void support_card_reset_deassert(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) 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) static int support_card_show_revision(void)
{ {
u32 revision; u32 revision;
revision = readl(MICRO_SUPPORT_CARD_REVISION); revision = readl(support_card_base + MICRO_SUPPORT_CARD_REVISION);
revision &= 0xff; revision &= 0xff;
/* revision 3.6.x card changed the revision format */ /* revision 3.6.x card changed the revision format */
@ -94,7 +113,7 @@ int board_eth_init(bd_t *bis)
if (!support_card_found) if (!support_card_found)
return 0; return 0;
return smc911x_initialize(0, SMC911X_BASE); return smc911x_initialize(0, (unsigned long)support_card_base + SMC911X_OFFSET);
} }
#endif #endif
@ -264,5 +283,5 @@ void led_puts(const char *s)
s++; s++;
} }
writel(~val, LED_BASE); writel(~val, support_card_base + LED_OFFSET);
} }