Merge tag 'omap-for-v3.9/multiplatform-enable-signed-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/multiplatform

From Tony Lindgren:
The last dependency for enabling multiplatform support for omap2+ is now
finally gone with commit 62e4d357 (ARM: 7609/1: disable errata work-arounds
which access secure registers) that was preventing booting omap4.

Note that make uImage will no longer work properly because of unspecified
load address, so uImage needs to be created manually with:

$ mkimage -A arm -O linux -T kernel -C none -a 0x80008000 -e 0x80008000 \
	-n "Linux" -d zImage-omap2plus uImage-omap2plus

You can also boot minimal vexpress configuration using qemu with:

$ qemu-system-arm -machine vexpress-a9 -m 1024 -net nic -net user -serial stdio \
	-append "console=ttyAMA0,115200n8 rw root=/dev/mmcblk0p2 rootwait" \
	-kernel zImage-omap2plus -initrd initrd.img -sd rootfs.img

Please note that some custom defconfigs now need to be updated to include
the following options:

CONFIG_ARCH_MULTIPLATFORM=y
CONFIG_ARCH_MULTI_V7=y
CONFIG_ARCH_OMAP2PLUS=y

And possibly also:

CONFIG_ARCH_MULTI_V6=y

Updating is needed at least for RMK's minimal allnoconfig files.

And if you need DEBUG_LL for earlyprintk, you now have to select the
debug port manually with Kconfig.

* tag 'omap-for-v3.9/multiplatform-enable-signed-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP2+: Remove now obsolete uncompress.h and debug-macro.S
  ARM: OMAP2+: Add minimal support for booting vexpress
  ARM: OMAP2+: Enable ARCH_MULTIPLATFORM support
  ARM: OMAP2+: Disable code that currently does not work with multiplaform
  ARM: OMAP2+: Add multiplatform debug_ll support
  ARM: OMAP: Fix dmaengine init for multiplatform
  ARM: OMAP: Fix i2c cmdline initcall for multiplatform
  ARM: OMAP2+: Use omap initcalls
  ARM: OMAP2+: Limit omap initcalls to omap only on multiplatform kernels

Signed-off-by: Olof Johansson <olof@lixom.net>

1 files changed, 190 insertions, 0 deletions

diff --git a/arch/arm/include/debug/omap2plus.S b/arch/arm/include/debug/omap2plus.S
new file mode 100644
index 000000000000..6d867aef18eb
--- /dev/null
+++ b/arch/arm/include/debug/omap2plus.S
@@ -0,0 +1,190 @@
+/*
+ * Debugging macro include header
+ *
+ *  Copyright (C) 1994-1999 Russell King
+ *  Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+*/
+
+#include <linux/serial_reg.h>
+
+/* OMAP2 serial ports */
+#define OMAP2_UART1_BASE	0x4806a000
+#define OMAP2_UART2_BASE	0x4806c000
+#define OMAP2_UART3_BASE	0x4806e000
+
+/* OMAP3 serial ports */
+#define OMAP3_UART1_BASE	OMAP2_UART1_BASE
+#define OMAP3_UART2_BASE	OMAP2_UART2_BASE
+#define OMAP3_UART3_BASE	0x49020000
+#define OMAP3_UART4_BASE	0x49042000	/* Only on 36xx */
+#define OMAP3_UART4_AM35XX_BASE	0x4809E000	/* Only on AM35xx */
+
+/* OMAP4 serial ports */
+#define OMAP4_UART1_BASE	OMAP2_UART1_BASE
+#define OMAP4_UART2_BASE	OMAP2_UART2_BASE
+#define OMAP4_UART3_BASE	0x48020000
+#define OMAP4_UART4_BASE	0x4806e000
+
+/* TI81XX serial ports */
+#define TI81XX_UART1_BASE	0x48020000
+#define TI81XX_UART2_BASE	0x48022000
+#define TI81XX_UART3_BASE	0x48024000
+
+/* AM3505/3517 UART4 */
+#define AM35XX_UART4_BASE	0x4809E000	/* Only on AM3505/3517 */
+
+/* AM33XX serial port */
+#define AM33XX_UART1_BASE	0x44E09000
+
+/* OMAP5 serial ports */
+#define OMAP5_UART1_BASE	OMAP2_UART1_BASE
+#define OMAP5_UART2_BASE	OMAP2_UART2_BASE
+#define OMAP5_UART3_BASE	OMAP4_UART3_BASE
+#define OMAP5_UART4_BASE	OMAP4_UART4_BASE
+#define OMAP5_UART5_BASE	0x48066000
+#define OMAP5_UART6_BASE	0x48068000
+
+/* External port on Zoom2/3 */
+#define ZOOM_UART_BASE		0x10000000
+#define ZOOM_UART_VIRT		0xfa400000
+
+#define OMAP_PORT_SHIFT		2
+#define ZOOM_PORT_SHIFT		1
+
+#define UART_OFFSET(addr)	((addr) & 0x00ffffff)
+
+		.pushsection .data
+omap_uart_phys:	.word	0
+omap_uart_virt:	.word	0
+omap_uart_lsr:	.word	0
+		.popsection
+
+		.macro	addruart, rp, rv, tmp
+
+		/* Use omap_uart_phys/virt if already configured */
+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]		@ omap_uart_phys
+		ldr	\rv, [\tmp, #4]		@ omap_uart_virt
+		cmp	\rp, #0			@ is port configured?
+		cmpne	\rv, #0
+		bne	100f			@ already configured
+
+		/* Configure the UART offset from the phys/virt base */
+#ifdef CONFIG_DEBUG_OMAP2UART1
+		mov	\rp, #UART_OFFSET(OMAP2_UART1_BASE)	@ omap2/3/4
+		b	98f
+#endif
+#ifdef CONFIG_DEBUG_OMAP2UART2
+		mov	\rp, #UART_OFFSET(OMAP2_UART2_BASE)	@ omap2/3/4
+		b	98f
+#endif
+#ifdef CONFIG_DEBUG_OMAP2UART3
+		mov	\rp, #UART_OFFSET(OMAP2_UART3_BASE)
+		b	98f
+#endif
+#ifdef CONFIG_DEBUG_OMAP3UART3
+		mov	\rp, #UART_OFFSET(OMAP3_UART1_BASE)
+		add	\rp, \rp, #0x00fb0000
+		add	\rp, \rp, #0x00006000		@ OMAP3_UART3_BASE
+		b	98f
+#endif
+#ifdef CONFIG_DEBUG_OMAP4UART3
+		mov	\rp, #UART_OFFSET(OMAP4_UART3_BASE)
+		b	98f
+#endif
+#ifdef CONFIG_DEBUG_OMAP3UART4
+		mov	\rp, #UART_OFFSET(OMAP3_UART1_BASE)
+		add	\rp, \rp, #0x00fb0000
+		add	\rp, \rp, #0x00028000		@ OMAP3_UART4_BASE
+		b	98f
+#endif
+#ifdef CONFIG_DEBUG_OMAP4UART4
+		mov	\rp, #UART_OFFSET(OMAP4_UART4_BASE)
+		b	98f
+#endif
+#ifdef CONFIG_DEBUG_TI81XXUART1
+		mov	\rp, #UART_OFFSET(TI81XX_UART1_BASE)
+		b	98f
+#endif
+#ifdef CONFIG_DEBUG_TI81XXUART2
+		mov	\rp, #UART_OFFSET(TI81XX_UART2_BASE)
+		b	98f
+#endif
+#ifdef CONFIG_DEBUG_TI81XXUART3
+		mov	\rp, #UART_OFFSET(TI81XX_UART3_BASE)
+		b	98f
+#endif
+#ifdef CONFIG_DEBUG_AM33XXUART1
+		ldr	\rp, =AM33XX_UART1_BASE
+		and	\rp, \rp, #0x00ffffff
+		b	97f
+#endif
+#ifdef CONFIG_DEBUG_ZOOM_UART
+		ldr	\rp, =ZOOM_UART_BASE
+		str	\rp, [\tmp, #0]		@ omap_uart_phys
+		ldr	\rp, =ZOOM_UART_VIRT
+		str	\rp, [\tmp, #4]		@ omap_uart_virt
+		mov	\rp, #(UART_LSR << ZOOM_PORT_SHIFT)
+		str	\rp, [\tmp, #8]		@ omap_uart_lsr
+#endif
+		b	10b
+
+		/* AM33XX: Store both phys and virt address for the uart */
+97:		add	\rp, \rp, #0x44000000	@ phys base
+		str	\rp, [\tmp, #0]		@ omap_uart_phys
+		sub	\rp, \rp, #0x44000000	@ phys base
+		add	\rp, \rp, #0xf9000000	@ virt base
+		str	\rp, [\tmp, #4]		@ omap_uart_virt
+		mov	\rp, #(UART_LSR << OMAP_PORT_SHIFT)
+		str	\rp, [\tmp, #8]		@ omap_uart_lsr
+
+		b	10b
+
+		/* Store both phys and virt address for the uart */
+98:		add	\rp, \rp, #0x48000000	@ phys base
+		str	\rp, [\tmp, #0]		@ omap_uart_phys
+		sub	\rp, \rp, #0x48000000	@ phys base
+		add	\rp, \rp, #0xfa000000	@ virt base
+		str	\rp, [\tmp, #4]		@ omap_uart_virt
+		mov	\rp, #(UART_LSR << OMAP_PORT_SHIFT)
+		str	\rp, [\tmp, #8]		@ omap_uart_lsr
+
+		b	10b
+
+		.align
+99:		.word	.
+		.word	omap_uart_phys
+		.ltorg
+
+100:		/* Pass the UART_LSR reg address */
+		ldr	\tmp, [\tmp, #8]	@ omap_uart_lsr
+		add	\rp, \rp, \tmp
+		add	\rv, \rv, \tmp
+		.endm
+
+		.macro	senduart,rd,rx
+		orr	\rd, \rd, \rx, lsl #24	@ preserve LSR reg offset
+		bic	\rx, \rx, #0xff		@ get base (THR) reg address
+		strb	\rd, [\rx]		@ send lower byte of rd
+		orr	\rx, \rx, \rd, lsr #24	@ restore original rx (LSR)
+		bic	\rd, \rd, #(0xff << 24)	@ restore original rd
+		.endm
+
+		.macro	busyuart,rd,rx
+1001:		ldrb	\rd, [\rx]		@ rx contains UART_LSR address
+		and	\rd, \rd, #(UART_LSR_TEMT | UART_LSR_THRE)
+		teq	\rd, #(UART_LSR_TEMT | UART_LSR_THRE)
+		bne	1001b
+		.endm
+
+		.macro	waituart,rd,rx
+		.endm