Merge branch 'mach_memory_h' of git://git.linaro.org/people/nico/linux into devel-stable

5 files changed, 35 insertions, 70 deletions

diff --git a/arch/arm/mach-davinci/include/mach/ddr2.h b/arch/arm/mach-davinci/include/mach/ddr2.h
new file mode 100644
index 00000000000..c19e047d0e6
--- /dev/null
+++ b/arch/arm/mach-davinci/include/mach/ddr2.h
@@ -0,0 +1,4 @@
+#define DDR2_SDRCR_OFFSET	0xc
+#define DDR2_SRPD_BIT		(1 << 23)
+#define DDR2_MCLKSTOPEN_BIT	(1 << 30)
+#define DDR2_LPMODEN_BIT	(1 << 31)
diff --git a/arch/arm/mach-davinci/include/mach/debug-macro.S b/arch/arm/mach-davinci/include/mach/debug-macro.S
index f8b7ea4f623..cf94552d527 100644
--- a/arch/arm/mach-davinci/include/mach/debug-macro.S
+++ b/arch/arm/mach-davinci/include/mach/debug-macro.S
@@ -18,56 +18,50 @@
 
 #include <linux/serial_reg.h>
 
-#include <asm/memory.h>
-
 #include <mach/serial.h>
 
 #define UART_SHIFT	2
 
-#define davinci_uart_v2p(x)	((x) - PAGE_OFFSET + PLAT_PHYS_OFFSET)
-#define davinci_uart_p2v(x)	((x) - PLAT_PHYS_OFFSET + PAGE_OFFSET)
-
 		.pushsection .data
 davinci_uart_phys:	.word	0
 davinci_uart_virt:	.word	0
 		.popsection
 
-		.macro addruart, rp, rv
+		.macro addruart, rp, rv, tmp
 
 		/* Use davinci_uart_phys/virt if already configured */
-10:		mrc	p15, 0, \rp, c1, c0
-		tst	\rp, #1			@ MMU enabled?
-		ldreq	\rp, =davinci_uart_v2p(davinci_uart_phys)
-		ldrne	\rp, =davinci_uart_phys
-		add	\rv, \rp, #4		@ davinci_uart_virt
-		ldr	\rp, [\rp, #0]
-		ldr	\rv, [\rv, #0]
+10:		adr	\rp, 99f		@ get effective addr of 99f
+		ldr	\rv, [\rp]		@ get absolute addr of 99f
+		sub	\rv, \rv, \rp		@ offset between the two
+		ldr	\rp, [\rp, #4]		@ abs addr of omap_uart_phys
+		sub	\tmp, \rp, \rv		@ make it effective
+		ldr	\rp, [\tmp, #0]		@ davinci_uart_phys
+		ldr	\rv, [\tmp, #4]		@ davinci_uart_virt
 		cmp	\rp, #0			@ is port configured?
 		cmpne	\rv, #0
-		bne	99f			@ already configured
+		bne	100f			@ already configured
 
 		/* Check the debug UART address set in uncompress.h */
-		mrc	p15, 0, \rp, c1, c0
-		tst	\rp, #1			@ MMU enabled?
+		and	\rp, pc, #0xff000000
+		ldr	\rv, =DAVINCI_UART_INFO_OFS
+		add	\rp, \rp, \rv
 
 		/* Copy uart phys address from decompressor uart info */
-		ldreq	\rv, =davinci_uart_v2p(davinci_uart_phys)
-		ldrne	\rv, =davinci_uart_phys
-		ldreq	\rp, =DAVINCI_UART_INFO
-		ldrne	\rp, =davinci_uart_p2v(DAVINCI_UART_INFO)
-		ldr	\rp, [\rp, #0]
-		str	\rp, [\rv]
+		ldr	\rv, [\rp, #0]
+		str	\rv, [\tmp, #0]
 
 		/* Copy uart virt address from decompressor uart info */
-		ldreq	\rv, =davinci_uart_v2p(davinci_uart_virt)
-		ldrne	\rv, =davinci_uart_virt
-		ldreq	\rp, =DAVINCI_UART_INFO
-		ldrne	\rp, =davinci_uart_p2v(DAVINCI_UART_INFO)
-		ldr	\rp, [\rp, #4]
-		str	\rp, [\rv]
+		ldr	\rv, [\rp, #4]
+		str	\rv, [\tmp, #4]
 
 		b	10b
-99:
+
+		.align
+99:		.word	.
+		.word	davinci_uart_phys
+		.ltorg
+
+100:
 		.endm
 
 		.macro	senduart,rd,rx
diff --git a/arch/arm/mach-davinci/include/mach/memory.h b/arch/arm/mach-davinci/include/mach/memory.h
deleted file mode 100644
index 885d2331966..00000000000
--- a/arch/arm/mach-davinci/include/mach/memory.h
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * DaVinci memory space definitions
- *
- * Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com>
- *
- * 2007 (c) MontaVista Software, Inc. This file is licensed under
- * the terms of the GNU General Public License version 2. This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
- */
-#ifndef __ASM_ARCH_MEMORY_H
-#define __ASM_ARCH_MEMORY_H
-
-/**************************************************************************
- * Included Files
- **************************************************************************/
-#include <asm/page.h>
-#include <asm/sizes.h>
-
-/**************************************************************************
- * Definitions
- **************************************************************************/
-#define DAVINCI_DDR_BASE	0x80000000
-#define DA8XX_DDR_BASE		0xc0000000
-
-#if defined(CONFIG_ARCH_DAVINCI_DA8XX) && defined(CONFIG_ARCH_DAVINCI_DMx)
-#error Cannot enable DaVinci and DA8XX platforms concurrently
-#elif defined(CONFIG_ARCH_DAVINCI_DA8XX)
-#define PLAT_PHYS_OFFSET DA8XX_DDR_BASE
-#else
-#define PLAT_PHYS_OFFSET DAVINCI_DDR_BASE
-#endif
-
-#define DDR2_SDRCR_OFFSET	0xc
-#define DDR2_SRPD_BIT		BIT(23)
-#define DDR2_MCLKSTOPEN_BIT	BIT(30)
-#define DDR2_LPMODEN_BIT	BIT(31)
-
-#endif /* __ASM_ARCH_MEMORY_H */
diff --git a/arch/arm/mach-davinci/include/mach/serial.h b/arch/arm/mach-davinci/include/mach/serial.h
index c9e6ce185a6..e347d88fef9 100644
--- a/arch/arm/mach-davinci/include/mach/serial.h
+++ b/arch/arm/mach-davinci/include/mach/serial.h
@@ -21,8 +21,9 @@
  * macros in debug-macro.S.
  *
  * This area sits just below the page tables (see arch/arm/kernel/head.S).
+ * We define it as a relative offset from start of usable RAM.
  */
-#define DAVINCI_UART_INFO	(PLAT_PHYS_OFFSET + 0x3ff8)
+#define DAVINCI_UART_INFO_OFS	0x3ff8
 
 #define DAVINCI_UART0_BASE	(IO_PHYS + 0x20000)
 #define DAVINCI_UART1_BASE	(IO_PHYS + 0x20400)
diff --git a/arch/arm/mach-davinci/include/mach/uncompress.h b/arch/arm/mach-davinci/include/mach/uncompress.h
index 78d80683cdc..9dc7cf9664f 100644
--- a/arch/arm/mach-davinci/include/mach/uncompress.h
+++ b/arch/arm/mach-davinci/include/mach/uncompress.h
@@ -43,7 +43,12 @@ static inline void flush(void)
 
 static inline void set_uart_info(u32 phys, void * __iomem virt)
 {
-	u32 *uart_info = (u32 *)(DAVINCI_UART_INFO);
+	/*
+	 * Get address of some.bss variable and round it down
+	 * a la CONFIG_AUTO_ZRELADDR.
+	 */
+	u32 ram_start = (u32)&uart & 0xf8000000;
+	u32 *uart_info = (u32 *)(ram_start + DAVINCI_UART_INFO_OFS);
 
 	uart = (u32 *)phys;
 	uart_info[0] = phys;