ARM: omap: un-merge plat/sram.c

The sram initialization code is the only shared omap1/2 code that
is not a standalone driver, but it is very short. Having two copies
of this code means some duplication of the sources, but actually
saves object code size as it can be inlined better.

Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

3 files changed, 1 insertions, 138 deletions

diff --git a/arch/arm/plat-omap/Makefile b/arch/arm/plat-omap/Makefile
index 5d55295a14ee..fefce2e1eaf3 100644
--- a/arch/arm/plat-omap/Makefile
+++ b/arch/arm/plat-omap/Makefile
@@ -6,4 +6,4 @@
 ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/arch/arm/plat-omap/include
 
 # Common support
-obj-y := sram.o
+obj-y :=
diff --git a/arch/arm/plat-omap/include/plat/sram.h b/arch/arm/plat-omap/include/plat/sram.h
deleted file mode 100644
index 30a07730807a..000000000000
--- a/arch/arm/plat-omap/include/plat/sram.h
+++ /dev/null
@@ -1,8 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-int omap_sram_init(void);
-
-void omap_map_sram(unsigned long start, unsigned long size,
-			unsigned long skip, int cached);
-void omap_sram_reset(void);
-
-extern void *omap_sram_push(void *funcp, unsigned long size);
diff --git a/arch/arm/plat-omap/sram.c b/arch/arm/plat-omap/sram.c
deleted file mode 100644
index 0f1eacad7fe3..000000000000
--- a/arch/arm/plat-omap/sram.c
+++ /dev/null
@@ -1,129 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * linux/arch/arm/plat-omap/sram.c
- *
- * OMAP SRAM detection and management
- *
- * Copyright (C) 2005 Nokia Corporation
- * Written by Tony Lindgren <tony@atomide.com>
- *
- * Copyright (C) 2009-2012 Texas Instruments
- * Added OMAP4/5 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
- */
-#undef DEBUG
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/io.h>
-
-#include <asm/fncpy.h>
-#include <asm/tlb.h>
-#include <asm/cacheflush.h>
-#include <asm/set_memory.h>
-
-#include <asm/mach/map.h>
-
-#include <plat/sram.h>
-
-#define ROUND_DOWN(value,boundary)	((value) & (~((boundary)-1)))
-
-static void __iomem *omap_sram_base;
-static unsigned long omap_sram_skip;
-static unsigned long omap_sram_size;
-static void __iomem *omap_sram_ceil;
-
-/*
- * Memory allocator for SRAM: calculates the new ceiling address
- * for pushing a function using the fncpy API.
- *
- * Note that fncpy requires the returned address to be aligned
- * to an 8-byte boundary.
- */
-static void *omap_sram_push_address(unsigned long size)
-{
-	unsigned long available, new_ceil = (unsigned long)omap_sram_ceil;
-
-	available = omap_sram_ceil - (omap_sram_base + omap_sram_skip);
-
-	if (size > available) {
-		pr_err("Not enough space in SRAM\n");
-		return NULL;
-	}
-
-	new_ceil -= size;
-	new_ceil = ROUND_DOWN(new_ceil, FNCPY_ALIGN);
-	omap_sram_ceil = IOMEM(new_ceil);
-
-	return (void *)omap_sram_ceil;
-}
-
-void *omap_sram_push(void *funcp, unsigned long size)
-{
-	void *sram;
-	unsigned long base;
-	int pages;
-	void *dst = NULL;
-
-	sram = omap_sram_push_address(size);
-	if (!sram)
-		return NULL;
-
-	base = (unsigned long)sram & PAGE_MASK;
-	pages = PAGE_ALIGN(size) / PAGE_SIZE;
-
-	set_memory_rw(base, pages);
-
-	dst = fncpy(sram, funcp, size);
-
-	set_memory_ro(base, pages);
-	set_memory_x(base, pages);
-
-	return dst;
-}
-
-/*
- * The SRAM context is lost during off-idle and stack
- * needs to be reset.
- */
-void omap_sram_reset(void)
-{
-	omap_sram_ceil = omap_sram_base + omap_sram_size;
-}
-
-/*
- * Note that we cannot use ioremap for SRAM, as clock init needs SRAM early.
- */
-void __init omap_map_sram(unsigned long start, unsigned long size,
-				 unsigned long skip, int cached)
-{
-	unsigned long base;
-	int pages;
-
-	if (size == 0)
-		return;
-
-	start = ROUND_DOWN(start, PAGE_SIZE);
-	omap_sram_size = size;
-	omap_sram_skip = skip;
-	omap_sram_base = __arm_ioremap_exec(start, size, cached);
-	if (!omap_sram_base) {
-		pr_err("SRAM: Could not map\n");
-		return;
-	}
-
-	omap_sram_reset();
-
-	/*
-	 * Looks like we need to preserve some bootloader code at the
-	 * beginning of SRAM for jumping to flash for reboot to work...
-	 */
-	memset_io(omap_sram_base + omap_sram_skip, 0,
-		  omap_sram_size - omap_sram_skip);
-
-	base = (unsigned long)omap_sram_base;
-	pages = PAGE_ALIGN(omap_sram_size) / PAGE_SIZE;
-
-	set_memory_ro(base, pages);
-	set_memory_x(base, pages);
-}