ARM: iop32x: enable multiplatform support

After iop32x was converted to the generic multi-irq entry
code, nothing really stops us from building it into a
generic kernel.

The two last headers can simply be removed, the mach/irqs.h
gets replaced with the sparse-irq intiialization from the
board specific .nr_irqs value, and the decompressor debug
output can use the debug_ll hack that all other platforms
use.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/Kconfig

@@ -356,17 +356,6 @@ config ARCH_FOOTBRIDGE
 	  Support for systems based on the DC21285 companion chip
 	  ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
 
-config ARCH_IOP32X
-	bool "IOP32x-based"
-	select CPU_XSCALE
-	select GPIO_IOP
-	select GPIOLIB
-	select FORCE_PCI
-	select PLAT_IOP
-	help
-	  Support for Intel's 80219 and IOP32X (XScale) family of
-	  processors.
-
 config ARCH_IXP4XX
 	bool "IXP4xx-based"
 	select ARCH_SUPPORTS_BIG_ENDIAN
@@ -688,9 +677,6 @@ config ARCH_MPS2
 config ARCH_ACORN
 	bool
 
-config PLAT_IOP
-	bool
-
 config PLAT_ORION
 	bool
 	select CLKSRC_MMIO

arch/arm/configs/iop32x_defconfig

@@ -7,6 +7,7 @@ CONFIG_SLAB=y
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set
+# CONFIG_ARCH_MULTI_V7 is not set
 CONFIG_ARCH_IOP32X=y
 CONFIG_MACH_GLANTANK=y
 CONFIG_ARCH_IQ80321=y

arch/arm/mach-iop32x/Kconfig

 # SPDX-License-Identifier: GPL-2.0
-if ARCH_IOP32X
-
-menu "IOP32x Implementation Options"
+menuconfig ARCH_IOP32X
+	bool "IOP32x-based platforms"
+	depends on ARCH_MULTI_V5
+	select CPU_XSCALE
+	select GPIO_IOP
+	select GPIOLIB
+	select FORCE_PCI
+	help
+	  Support for Intel's 80219 and IOP32X (XScale) family of
+	  processors.
 
-comment "IOP32x Platform Types"
+if ARCH_IOP32X
 
 config MACH_EP80219
 	bool
@@ -42,6 +49,4 @@ config MACH_EM7210
 	  board. Say also Y here if you have a SS4000e Baxter Creek NAS
 	  appliance."
 
-endmenu
-
 endif

arch/arm/mach-iop32x/em7210.c

@@ -223,6 +223,7 @@ static void __init em7210_init_machine(void)
 
 MACHINE_START(EM7210, "Lanner EM7210")
 	.atag_offset	= 0x100,
+	.nr_irqs	= IOP32X_NR_IRQS,
 	.map_io		= em7210_map_io,
 	.init_irq	= iop32x_init_irq,
 	.init_time	= em7210_timer_init,

arch/arm/mach-iop32x/glantank.c

@@ -205,6 +205,7 @@ static void __init glantank_init_machine(void)
 MACHINE_START(GLANTANK, "GLAN Tank")
 	/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 	.atag_offset	= 0x100,
+	.nr_irqs	= IOP32X_NR_IRQS,
 	.map_io		= glantank_map_io,
 	.init_irq	= iop32x_init_irq,
 	.init_time	= glantank_timer_init,

arch/arm/mach-iop32x/include/mach/irqs.h

-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * arch/arm/mach-iop32x/include/mach/irqs.h
- *
- * Author:	Rory Bolt <rorybolt@pacbell.net>
- * Copyright:	(C) 2002 Rory Bolt
- */
-
-#ifndef __IRQS_H
-#define __IRQS_H
-
-#define NR_IRQS			33
-
-#endif

arch/arm/mach-iop32x/include/mach/uncompress.h

-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * arch/arm/mach-iop32x/include/mach/uncompress.h
- */
-
-#include <asm/types.h>
-#include <asm/mach-types.h>
-#include <linux/serial_reg.h>
-
-#define uart_base ((volatile u8 *)0xfe800000)
-
-#define TX_DONE		(UART_LSR_TEMT | UART_LSR_THRE)
-
-static inline void putc(char c)
-{
-	while ((uart_base[UART_LSR] & TX_DONE) != TX_DONE)
-		barrier();
-	uart_base[UART_TX] = c;
-}
-
-static inline void flush(void)
-{
-}
-
-#define arch_decomp_setup() do { } while (0)

arch/arm/mach-iop32x/iq31244.c

@@ -324,6 +324,7 @@ MACHINE_END
 MACHINE_START(EP80219, "Intel EP80219")
 	/* Maintainer: Intel Corp. */
 	.atag_offset	= 0x100,
+	.nr_irqs	= IOP32X_NR_IRQS,
 	.map_io		= iq31244_map_io,
 	.init_irq	= iop32x_init_irq,
 	.init_time	= iq31244_timer_init,

arch/arm/mach-iop32x/iq80321.c

@@ -183,6 +183,7 @@ static void __init iq80321_init_machine(void)
 MACHINE_START(IQ80321, "Intel IQ80321")
 	/* Maintainer: Intel Corp. */
 	.atag_offset	= 0x100,
+	.nr_irqs	= IOP32X_NR_IRQS,
 	.map_io		= iq80321_map_io,
 	.init_irq	= iop32x_init_irq,
 	.init_time	= iq80321_timer_init,

arch/arm/mach-iop32x/irqs.h

@@ -43,4 +43,6 @@
 #define IRQ_IOP32X_XINT3	IOP_IRQ(30)
 #define IRQ_IOP32X_HPI		IOP_IRQ(31)
 
+#define IOP32X_NR_IRQS		(IRQ_IOP32X_HPI + 1)
+
 #endif

arch/arm/mach-iop32x/n2100.c

@@ -358,6 +358,7 @@ static void __init n2100_init_machine(void)
 MACHINE_START(N2100, "Thecus N2100")
 	/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 	.atag_offset	= 0x100,
+	.nr_irqs	= IOP32X_NR_IRQS,
 	.map_io		= n2100_map_io,
 	.init_irq	= iop32x_init_irq,
 	.init_time	= n2100_timer_init,