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-rw-r--r--arch/arm/mach-bcm283x/core.c57
1 files changed, 23 insertions, 34 deletions
diff --git a/arch/arm/mach-bcm283x/core.c b/arch/arm/mach-bcm283x/core.c
index f2528cf1f1..1091ad0b56 100644
--- a/arch/arm/mach-bcm283x/core.c
+++ b/arch/arm/mach-bcm283x/core.c
@@ -1,40 +1,29 @@
-/*
- * Author: Carlo Caione <carlo@carlocaione.org>
- *
- * Based on mach-nomadik
- * Copyright (C) 2009 Jean-Christophe PLAGNIOL-VILLARD <plagnio@jcrosoft.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
+// SPDX-License-Identifier: GPL-2.0-only
-#include <common.h>
-#include <init.h>
+#include <linux/types.h>
+#include <mach/bcm283x/core.h>
+#include <asm/system_info.h>
-#include <linux/clk.h>
-#include <linux/clkdev.h>
-#include <linux/err.h>
-
-#include <io.h>
-#include <asm/armlinux.h>
-#include <linux/sizes.h>
+void __iomem *bcm2835_get_mmio_base_by_cpuid(void)
+{
+ static u32 cpuid;
-#include <mach/platform.h>
-#include <mach/core.h>
-#include <linux/amba/bus.h>
+ if (!cpuid) {
+ cpuid = read_cpuid_id();
+ pr_debug("ARM CPUID: %08x\n", cpuid);
+ }
-void bcm2835_add_device_sdram(u32 size)
-{
- if (!size)
- size = get_ram_size((ulong *) BCM2835_SDRAM_BASE, SZ_128M);
+ /* We know ARM1167, Cortex A-7, A-53 and A-72 CPUID mask is identical */
+ switch(cpuid & CPU_IS_ARM1176_MASK) {
+ case CPU_IS_ARM1176: /* bcm2835 */
+ return IOMEM(0x20000000);
+ case CPU_IS_CORTEX_A7: /* bcm2836 */
+ case CPU_IS_CORTEX_A53: /* bcm2837 */
+ return IOMEM(0x3f000000);
+ case CPU_IS_CORTEX_A72: /* bcm2711 */
+ return IOMEM(0xfe000000);
+ }
- arm_add_mem_device("ram0", BCM2835_SDRAM_BASE, size);
+ pr_err("Couldn't determine rpi by CPUID %08x\n", cpuid);
+ return NULL;
}