Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6

* 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: (214 commits)
  omap2: Initialize Menelaus and MMC for N8X0
  AM3517 EVM: correct typo - tca6416 mispelt as tca6516
  AM3517 EVM: Enable I2C support
  AM35x: Enable OMAP_MUX in defconfig
  AM35x: Add missing GPIO mux config for EHCI port
  Zoom3: Defconfig update
  omap: i2c: Fix muxing for command line enabled bus
  OMAP4: clock: Remove clock hacks from timer-gp.c
  OMAP4: clock: Add dummy clock nodes for interface clocks
  OMAP4: clock: Rename leaf clock nodes to end with a _ick or _fck
  OMAP2+ clock: revise omap2_clk_{disable,enable}()
  OMAP2/3 clock: combine OMAP2 & 3 boot-time MPU rate change code
  OMAP clockdomain: if no autodeps exist, don't try to add or remove them
  OMAP hwmod: add hwmod class support
  OMAP hwmod: convert header files with static allocations into C files
  OMAP hwmod: convert hwmod to use hardware clock names rather than clkdev dev+con
  OMAP clock: add omap_clk_get_by_name() for use by OMAP hwmod core code
  OMAP3: clock: add capability to change rate of dpll4_m5_ck_3630
  OMAP4 clock: drop the ALWAYS_ENABLED clock flag
  OMAP clock: drop RATE_FIXED clock flag
  ...

1 files changed, 75 insertions, 13 deletions

diff --git a/arch/arm/mach-omap1/include/mach/debug-macro.S b/arch/arm/mach-omap1/include/mach/debug-macro.S
index 8c74cab2fa8..b6d9584544b 100644
--- a/arch/arm/mach-omap1/include/mach/debug-macro.S
+++ b/arch/arm/mach-omap1/include/mach/debug-macro.S
@@ -11,18 +11,80 @@
  *
 */
 
+#include <linux/serial_reg.h>
+
+#include <plat/serial.h>
+
+		.pushsection .data
+omap_uart_phys:	.word	0x0
+omap_uart_virt:	.word	0x0
+		.popsection
+
+		/*
+		 * Note that this code won't work if the bootloader passes
+		 * a wrong machine ID number in r1. To debug, just hardcode
+		 * the desired UART phys and virt addresses temporarily into
+		 * the omap_uart_phys and omap_uart_virt above.
+		 */
 		.macro	addruart, rx, tmp
+
+		/* Use omap_uart_phys/virt if already configured */
+9:		mrc	p15, 0, \rx, c1, c0
+		tst	\rx, #1			@ MMU enabled?
+		ldreq	\rx, =omap_uart_phys	@ physical base address
+		ldrne	\rx, =omap_uart_virt	@ virtual base
+		ldr	\rx, [\rx, #0]
+		cmp	\rx, #0			@ is port configured?
+		bne	99f			@ already configured
+
+		/* Check 7XX UART1 scratchpad register for uart to use */
+		mrc	p15, 0, \rx, c1, c0
+		tst	\rx, #1			@ MMU enabled?
+		moveq	\rx, #0xff000000	@ physical base address
+		movne	\rx, #0xfe000000	@ virtual base
+		orr	\rx, \rx, #0x00fb0000	@ OMAP1UART1
+		ldrb	\rx, [\rx, #(UART_SCR << OMAP7XX_PORT_SHIFT)]
+		cmp	\rx, #0			@ anything in 7XX scratchpad?
+		bne	10f			@ found 7XX uart
+
+		/* Check 15xx/16xx UART1 scratchpad register for uart to use */
 		mrc	p15, 0, \rx, c1, c0
 		tst	\rx, #1			@ MMU enabled?
 		moveq	\rx, #0xff000000	@ physical base address
 		movne	\rx, #0xfe000000	@ virtual base
-		orr	\rx, \rx, #0x00fb0000
-#ifdef CONFIG_OMAP_LL_DEBUG_UART3
-		orr	\rx, \rx, #0x00009000	@ UART 3
-#endif
-#if defined(CONFIG_OMAP_LL_DEBUG_UART2) || defined(CONFIG_OMAP_LL_DEBUG_UART3)
-		orr	\rx, \rx, #0x00000800	@ UART 2 & 3
-#endif
+		orr	\rx, \rx, #0x00fb0000	@ OMAP1UART1
+		ldrb	\rx, [\rx, #(UART_SCR << OMAP_PORT_SHIFT)]
+
+		/* Select the UART to use based on the UART1 scratchpad value */
+10:		cmp	\rx, #0			@ no port configured?
+		beq	11f			@ if none, try to use UART1
+		cmp	\rx, #OMAP1UART1
+		beq	11f			@ configure OMAP1UART1
+		cmp	\rx, #OMAP1UART2
+		beq	12f			@ configure OMAP1UART2
+		cmp	\rx, #OMAP1UART3
+		beq	13f			@ configure OMAP2UART3
+
+		/* Configure the UART offset from the phys/virt base */
+11:		mov	\rx, #0x00fb0000	@ OMAP1UART1
+		b	98f
+12:		mov	\rx, #0x00fb0000	@ OMAP1UART1
+		orr	\rx, \rx, #0x00000800	@ OMAP1UART2
+		b	98f
+13:		mov	\rx, #0x00fb0000	@ OMAP1UART1
+		orr	\rx, \rx, #0x00000800	@ OMAP1UART2
+		orr	\rx, \rx, #0x00009000	@ OMAP1UART3
+
+		/* Store both phys and virt address for the uart */
+98:		add	\rx, \rx, #0xff000000	@ phys base
+		ldr	\tmp, =omap_uart_phys
+		str	\rx, [\tmp, #0]
+		sub	\rx, \rx, #0xff000000	@ phys base
+		add	\rx, \rx, #0xfe000000	@ virt base
+		ldr	\tmp, =omap_uart_virt
+		str	\rx, [\tmp, #0]
+		b	9b
+99:
 		.endm
 
 		.macro	senduart,rd,rx
@@ -30,13 +92,13 @@
 		.endm
 
 		.macro	busyuart,rd,rx
-1001:		ldrb	\rd, [\rx, #(0x5 << 2)]	@ OMAP-1510 and friends
-		and	\rd, \rd, #0x60
-		teq	\rd, #0x60
+1001:		ldrb	\rd, [\rx, #(UART_LSR << OMAP_PORT_SHIFT)]
+		and	\rd, \rd, #(UART_LSR_TEMT | UART_LSR_THRE)
+		teq	\rd, #(UART_LSR_TEMT | UART_LSR_THRE)
 		beq	1002f
-		ldrb	\rd, [\rx, #(0x5 << 0)]	@ OMAP-730 only
-		and	\rd, \rd, #0x60
-		teq	\rd, #0x60
+		ldrb	\rd, [\rx, #(UART_LSR << OMAP7XX_PORT_SHIFT)]
+		and	\rd, \rd, #(UART_LSR_TEMT | UART_LSR_THRE)
+		teq	\rd, #(UART_LSR_TEMT | UART_LSR_THRE)
 		bne	1001b
 1002:
 		.endm