Remove various unused interrupt related code

With d53ecad92f06 some unused interrupt related code was removed.
However all of these options are currently unused.  Rather than migrate
some of these options to Kconfig we just remove the code in question.

The only related code changes here are that in some cases we use
CONFIG_STACKSIZE in non-IRQ related context.  In these cases we rename
and move the value local to the code in question.

Fixes: d53ecad92f06 ("Merge branch 'master' of git://git.denx.de/u-boot-sunxi")
Signed-off-by: Tom Rini <trini@konsulko.com>

11 files changed, 5 insertions, 148 deletions

diff --git a/arch/arm/cpu/arm720t/interrupts.c b/arch/arm/cpu/arm720t/interrupts.c
index e8ba1ae..1edb1a4 100644
--- a/arch/arm/cpu/arm720t/interrupts.c
+++ b/arch/arm/cpu/arm720t/interrupts.c
@@ -12,12 +12,6 @@
 
 #include <common.h>
 
-#ifdef CONFIG_USE_IRQ
-void do_irq (struct pt_regs *pt_regs)
-{
-}
-#endif
-
 #if defined(CONFIG_TEGRA)
 static ulong timestamp;
 static ulong lastdec;
diff --git a/arch/arm/cpu/arm920t/Makefile b/arch/arm/cpu/arm920t/Makefile
index 7aa432a..8faf34b 100644
--- a/arch/arm/cpu/arm920t/Makefile
+++ b/arch/arm/cpu/arm920t/Makefile
@@ -8,7 +8,6 @@
 extra-y	= start.o
 
 obj-y	+= cpu.o
-obj-$(CONFIG_USE_IRQ)	+= interrupts.o
 
 obj-$(CONFIG_EP93XX) += ep93xx/
 obj-$(CONFIG_IMX) += imx/
diff --git a/arch/arm/cpu/arm920t/s3c24x0/Makefile b/arch/arm/cpu/arm920t/s3c24x0/Makefile
index e44c549..e78f8a0 100644
--- a/arch/arm/cpu/arm920t/s3c24x0/Makefile
+++ b/arch/arm/cpu/arm920t/s3c24x0/Makefile
@@ -5,7 +5,6 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-obj-$(CONFIG_USE_IRQ) += interrupts.o
 obj-$(CONFIG_DISPLAY_CPUINFO)	+= cpu_info.o
 obj-y	+= speed.o
 obj-y	+= timer.o
diff --git a/arch/arm/cpu/sa1100/cpu.c b/arch/arm/cpu/sa1100/cpu.c
index 4c9752a..59585af 100644
--- a/arch/arm/cpu/sa1100/cpu.c
+++ b/arch/arm/cpu/sa1100/cpu.c
@@ -19,10 +19,6 @@
 #include <asm/system.h>
 #include <asm/io.h>
 
-#ifdef CONFIG_USE_IRQ
-DECLARE_GLOBAL_DATA_PTR;
-#endif
-
 static void cache_flush(void);
 
 int cleanup_before_linux (void)
diff --git a/arch/arm/lib/interrupts.c b/arch/arm/lib/interrupts.c
index ed83043..066c172 100644
--- a/arch/arm/lib/interrupts.c
+++ b/arch/arm/lib/interrupts.c
@@ -26,75 +26,6 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-#ifdef CONFIG_USE_IRQ
-int interrupt_init (void)
-{
-	unsigned long cpsr;
-
-	/*
-	 * setup up stacks if necessary
-	 */
-	IRQ_STACK_START = gd->irq_sp - 4;
-	IRQ_STACK_START_IN = gd->irq_sp + 8;
-	FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ;
-
-
-	__asm__ __volatile__("mrs %0, cpsr\n"
-			     : "=r" (cpsr)
-			     :
-			     : "memory");
-
-	__asm__ __volatile__("msr cpsr_c, %0\n"
-			     "mov sp, %1\n"
-			     :
-			     : "r" (IRQ_MODE | I_BIT | F_BIT | (cpsr & ~FIQ_MODE)),
-			       "r" (IRQ_STACK_START)
-			     : "memory");
-
-	__asm__ __volatile__("msr cpsr_c, %0\n"
-			     "mov sp, %1\n"
-			     :
-			     : "r" (FIQ_MODE | I_BIT | F_BIT | (cpsr & ~IRQ_MODE)),
-			       "r" (FIQ_STACK_START)
-			     : "memory");
-
-	__asm__ __volatile__("msr cpsr_c, %0"
-			     :
-			     : "r" (cpsr)
-			     : "memory");
-
-	return arch_interrupt_init();
-}
-
-/* enable IRQ interrupts */
-void enable_interrupts (void)
-{
-	unsigned long temp;
-	__asm__ __volatile__("mrs %0, cpsr\n"
-			     "bic %0, %0, #0x80\n"
-			     "msr cpsr_c, %0"
-			     : "=r" (temp)
-			     :
-			     : "memory");
-}
-
-
-/*
- * disable IRQ/FIQ interrupts
- * returns true if interrupts had been enabled before we disabled them
- */
-int disable_interrupts (void)
-{
-	unsigned long old,temp;
-	__asm__ __volatile__("mrs %0, cpsr\n"
-			     "orr %1, %0, #0xc0\n"
-			     "msr cpsr_c, %1"
-			     : "=r" (old), "=r" (temp)
-			     :
-			     : "memory");
-	return (old & 0x80) == 0;
-}
-#else
 int interrupt_init (void)
 {
 	/*
@@ -113,8 +44,6 @@ int disable_interrupts (void)
 {
 	return 0;
 }
-#endif
-
 
 void bad_mode (void)
 {
@@ -212,7 +141,6 @@ void do_fiq (struct pt_regs *pt_regs)
 	bad_mode ();
 }
 
-#ifndef CONFIG_USE_IRQ
 void do_irq (struct pt_regs *pt_regs)
 {
 	efi_restore_gd();
@@ -220,4 +148,3 @@ void do_irq (struct pt_regs *pt_regs)
 	show_regs (pt_regs);
 	bad_mode ();
 }
-#endif
diff --git a/arch/arm/lib/stack.c b/arch/arm/lib/stack.c
index 4614d26..737622d 100644
--- a/arch/arm/lib/stack.c
+++ b/arch/arm/lib/stack.c
@@ -25,14 +25,6 @@ int arch_reserve_stacks(void)
 	gd->irq_sp = gd->start_addr_sp;
 
 # if !defined(CONFIG_ARM64)
-#  ifdef CONFIG_USE_IRQ
-	gd->start_addr_sp -= (CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ);
-	debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
-	      CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ, gd->start_addr_sp);
-
-	/* 8-byte alignment for ARM ABI compliance */
-	gd->start_addr_sp &= ~0x07;
-#  endif
 	/* leave 3 words for abort-stack, plus 1 for alignment */
 	gd->start_addr_sp -= 16;
 # endif
diff --git a/arch/arm/lib/vectors.S b/arch/arm/lib/vectors.S
index 9fe7415..f53b1e9 100644
--- a/arch/arm/lib/vectors.S
+++ b/arch/arm/lib/vectors.S
@@ -128,19 +128,6 @@ fiq:
 IRQ_STACK_START_IN:
 	.word	0x0badc0de
 
-#ifdef CONFIG_USE_IRQ
-/* IRQ stack memory (calculated at run-time) */
-.globl IRQ_STACK_START
-IRQ_STACK_START:
-	.word	0x0badc0de
-
-/* IRQ stack memory (calculated at run-time) */
-.globl FIQ_STACK_START
-FIQ_STACK_START:
-	.word 0x0badc0de
-
-#endif /* CONFIG_USE_IRQ */
-
 @
 @ IRQ stack frame.
 @
@@ -264,24 +251,6 @@ not_used:
 	bad_save_user_regs
 	bl	do_not_used
 
-#ifdef CONFIG_USE_IRQ
-
-	.align	5
-irq:
-	get_irq_stack
-	irq_save_user_regs
-	bl	do_irq
-	irq_restore_user_regs
-
-	.align	5
-fiq:
-	get_fiq_stack
-	/* someone ought to write a more effiction fiq_save_user_regs */
-	irq_save_user_regs
-	bl	do_fiq
-	irq_restore_user_regs
-
-#else
 
 	.align	5
 irq:
@@ -295,6 +264,4 @@ fiq:
 	bad_save_user_regs
 	bl	do_fiq
 
-#endif /* CONFIG_USE_IRQ */
-
 #endif	/* CONFIG_SPL_BUILD */
diff --git a/arch/arm/mach-davinci/misc.c b/arch/arm/mach-davinci/misc.c
index e1064e0..ec331ba 100644
--- a/arch/arm/mach-davinci/misc.c
+++ b/arch/arm/mach-davinci/misc.c
@@ -107,7 +107,6 @@ void davinci_sync_env_enetaddr(uint8_t *rom_enetaddr)
 #endif	/* CONFIG_DRIVER_TI_EMAC */
 
 #if defined(CONFIG_SOC_DA8XX)
-#ifndef CONFIG_USE_IRQ
 void irq_init(void)
 {
 	/*
@@ -122,7 +121,6 @@ void irq_init(void)
 	writel(0xffffffff, &davinci_aintc_regs->ecr2);
 	writel(0xffffffff, &davinci_aintc_regs->ecr3);
 }
-#endif
 
 /*
  * Enable PSC for various peripherals.
diff --git a/arch/arm/mach-keystone/cmd_ddr3.c b/arch/arm/mach-keystone/cmd_ddr3.c
index ea78ad8..d3eab07 100644
--- a/arch/arm/mach-keystone/cmd_ddr3.c
+++ b/arch/arm/mach-keystone/cmd_ddr3.c
@@ -15,12 +15,13 @@
 DECLARE_GLOBAL_DATA_PTR;
 
 #define DDR_MIN_ADDR		CONFIG_SYS_SDRAM_BASE
+#define STACKSIZE		(512 << 10)     /* 512 KiB */
 
 #define DDR_REMAP_ADDR		0x80000000
 #define ECC_START_ADDR1		((DDR_MIN_ADDR - DDR_REMAP_ADDR) >> 17)
 
 #define ECC_END_ADDR1		(((gd->start_addr_sp - DDR_REMAP_ADDR - \
-				 CONFIG_STACKSIZE) >> 17) - 2)
+				 STACKSIZE) >> 17) - 2)
 
 #define DDR_TEST_BURST_SIZE	1024
 
diff --git a/arch/avr32/cpu/exception.c b/arch/avr32/cpu/exception.c
index d6991f6..22eab03 100644
--- a/arch/avr32/cpu/exception.c
+++ b/arch/avr32/cpu/exception.c
@@ -10,6 +10,8 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
+#define STACKSIZE	2048
+
 static const char * const cpu_modes[8] = {
 	"Application", "Supervisor", "Interrupt level 0", "Interrupt level 1",
 	"Interrupt level 2", "Interrupt level 3", "Exception", "NMI"
@@ -96,7 +98,7 @@ void do_unknown_exception(unsigned int ecr, struct pt_regs *regs)
 	printf("CPU Mode: %s\n", cpu_modes[mode]);
 
 	/* Avoid exception loops */
-	if (regs->sp < (gd->start_addr_sp - CONFIG_STACKSIZE) ||
+	if (regs->sp < (gd->start_addr_sp - STACKSIZE) ||
 	    regs->sp >= gd->start_addr_sp)
 		printf("\nStack pointer seems bogus, won't do stack dump\n");
 	else
diff --git a/arch/nds32/cpu/n1213/start.S b/arch/nds32/cpu/n1213/start.S
index 7b2b637..99971fd 100644
--- a/arch/nds32/cpu/n1213/start.S
+++ b/arch/nds32/cpu/n1213/start.S
@@ -90,24 +90,6 @@ _start:	j	reset
 _TEXT_BASE:
 	.word	CONFIG_SYS_TEXT_BASE
 
-/*
- * These are defined in the board-specific linker script.
- * Subtracting _start from them lets the linker put their
- * relative position in the executable instead of leaving
- * them null.
- */
-#ifdef CONFIG_USE_IRQ
-/* IRQ stack memory (calculated at run-time) */
-.globl IRQ_STACK_START
-IRQ_STACK_START:
-	.word 0x0badc0de
-
-/* IRQ stack memory (calculated at run-time) */
-.globl FIQ_STACK_START
-FIQ_STACK_START:
-	.word 0x0badc0de
-#endif
-
 /* IRQ stack memory (calculated at run-time) + 8 bytes */
 .globl IRQ_STACK_START_IN
 IRQ_STACK_START_IN: