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authorRussell King <rmk+kernel@arm.linux.org.uk>2011-10-18 13:40:54 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-10-18 13:40:54 +0100
commitcefd3e71efca6f4ef7f06f1fc507771d76072741 (patch)
treed76cb7969435d5eccdbd3d081555d0a8203ede4a /arch/arm/mach-davinci/include
parenta26bce1220a4c5a7a074a779e6aad3cae63a94f7 (diff)
parent0cdc8b921d68817b687755b4f6ae20cd8ff1d026 (diff)
Merge branch 'mach_memory_h' of git://git.linaro.org/people/nico/linux into devel-stable
Diffstat (limited to 'arch/arm/mach-davinci/include')
-rw-r--r--arch/arm/mach-davinci/include/mach/ddr2.h4
-rw-r--r--arch/arm/mach-davinci/include/mach/debug-macro.S52
-rw-r--r--arch/arm/mach-davinci/include/mach/memory.h39
-rw-r--r--arch/arm/mach-davinci/include/mach/serial.h3
-rw-r--r--arch/arm/mach-davinci/include/mach/uncompress.h7
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;