Merge tag 'microblaze-v5.7-rc1' of git://git.monstr.eu/linux-2.6-microblaze

Pull microblaze updates from Michal Simek:

 - convert license headers to SPDX

 - cleanup header handling and use asm-generic one

 - get rid of earlyprintk residues

 - define barriers and use it in the code

 - get rid of setup_irq() for timer

 - various small addons and fixes

* tag 'microblaze-v5.7-rc1' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze: Replace setup_irq() by request_irq()
  microblaze: Stop printing the virtual memory layout
  microblaze: Use asm generic cmpxchg.h for !SMP case
  microblaze: Define percpu sestion in linker file
  microblaze: Remove unused boot_cpuid variable
  microblaze: Add missing irqflags.h header
  microblaze: Add sync to tlb operations
  microblaze: Define microblaze barrier
  microblaze: Remove empty headers
  microblaze: Remove early printk setup
  microblaze: Remove architecture tlb.h and use generic one
  microblaze: Convert headers to SPDX license
  microblaze: Fix _reset() function
  microblaze: Kernel parameters should be parsed earlier

arch/microblaze/include/asm/unistd.h

+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Copyright (C) 2007-2008 Michal Simek <monstr@monstr.eu>
  * Copyright (C) 2006 Atmark Techno, Inc.
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #ifndef _ASM_MICROBLAZE_UNISTD_H
 #define _ASM_MICROBLAZE_UNISTD_H

arch/microblaze/include/asm/unwind.h

+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Backtrace support for Microblaze
  *
  * Copyright (C) 2010  Digital Design Corporation
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 
 #ifndef __MICROBLAZE_UNWIND_H

arch/microblaze/include/asm/user.h

-

arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c

@@ -22,13 +22,8 @@
 
 #define CI(c, p) { ci->c = PVR_##p(pvr); }
 
-#if defined(CONFIG_EARLY_PRINTK) && defined(CONFIG_SERIAL_UARTLITE_CONSOLE)
 #define err_printk(x) \
-	early_printk("ERROR: Microblaze " x "-different for PVR and DTS\n");
-#else
-#define err_printk(x) \
-	pr_info("ERROR: Microblaze " x "-different for PVR and DTS\n");
-#endif
+	pr_err("ERROR: Microblaze " x "-different for PVR and DTS\n");
 
 void set_cpuinfo_pvr_full(struct cpuinfo *ci, struct device_node *cpu)
 {

arch/microblaze/kernel/cpu/pvr.c

@@ -14,6 +14,7 @@
 #include <linux/compiler.h>
 #include <asm/exceptions.h>
 #include <asm/pvr.h>
+#include <linux/irqflags.h>
 
 /*
  * Until we get an assembler that knows about the pvr registers,

arch/microblaze/kernel/entry.S

@@ -958,6 +958,7 @@ ENTRY(_switch_to)
 	nop
 
 ENTRY(_reset)
+	VM_OFF
 	brai	0; /* Jump to reset vector */
 
 	/* These are compiled and loaded into high memory, then

arch/microblaze/kernel/misc.S

@@ -39,7 +39,7 @@ _tlbia_1:
 	rsubi	r11, r12, MICROBLAZE_TLB_SIZE - 1
 	bneid	r11, _tlbia_1 /* loop for all entries */
 	addik	r12, r12, 1
-	/* sync */
+	mbar	1 /* sync */
 	rtsd	r15, 8
 	nop
 	.size  _tlbia, . - _tlbia
@@ -58,6 +58,7 @@ _tlbie:
 	blti	r12, _tlbie_1 /* Check if found */
 	mts	rtlbhi, r0 /* flush: ensure V is clear */
 	nop
+	mbar	1 /* sync */
 _tlbie_1:
 	rtsd	r15, 8
 	nop

arch/microblaze/kernel/setup.c

@@ -41,7 +41,6 @@ DEFINE_PER_CPU(unsigned int, ENTRY_SP);	/* Saved SP on kernel entry */
 DEFINE_PER_CPU(unsigned int, R11_SAVE);	/* Temp variable for entry */
 DEFINE_PER_CPU(unsigned int, CURRENT_SAVE);	/* Saved current pointer */
 
-unsigned int boot_cpuid;
 /*
  * Placed cmd_line to .data section because can be initialized from
  * ASM code. Default position is BSS section which is cleared
@@ -54,7 +53,6 @@ void __init setup_arch(char **cmdline_p)
 	*cmdline_p = boot_command_line;
 
 	setup_memory();
-	parse_early_param();
 
 	console_verbose();
 

arch/microblaze/kernel/timer.c

@@ -161,13 +161,6 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-static struct irqaction timer_irqaction = {
-	.handler = timer_interrupt,
-	.flags = IRQF_TIMER,
-	.name = "timer",
-	.dev_id = &clockevent_xilinx_timer,
-};
-
 static __init int xilinx_clockevent_init(void)
 {
 	clockevent_xilinx_timer.mult =
@@ -309,7 +302,8 @@ static int __init xilinx_timer_init(struct device_node *timer)
 
 	freq_div_hz = timer_clock_freq / HZ;
 
-	ret = setup_irq(irq, &timer_irqaction);
+	ret = request_irq(irq, timer_interrupt, IRQF_TIMER, "timer",
+			  &clockevent_xilinx_timer);
 	if (ret) {
 		pr_err("Failed to setup IRQ");
 		return ret;

arch/microblaze/kernel/vmlinux.lds.S

@@ -13,6 +13,7 @@ ENTRY(microblaze_start)
 
 #define RO_EXCEPTION_TABLE_ALIGN	16
 
+#include <asm/cache.h>
 #include <asm/page.h>
 #include <asm-generic/vmlinux.lds.h>
 #include <asm/thread_info.h>
@@ -89,6 +90,8 @@ SECTIONS {
 		_KERNEL_SDA_BASE_ = _ssro + (_ssro_size / 2) ;
 	}
 
+	PERCPU_SECTION(L1_CACHE_BYTES)
+
 	. = ALIGN(PAGE_SIZE);
 	__init_begin = .;
 

arch/microblaze/mm/init.c

@@ -201,18 +201,6 @@ void __init mem_init(void)
 #endif
 
 	mem_init_print_info(NULL);
-#ifdef CONFIG_MMU
-	pr_info("Kernel virtual memory layout:\n");
-	pr_info("  * 0x%08lx..0x%08lx  : fixmap\n", FIXADDR_START, FIXADDR_TOP);
-#ifdef CONFIG_HIGHMEM
-	pr_info("  * 0x%08lx..0x%08lx  : highmem PTEs\n",
-		PKMAP_BASE, PKMAP_ADDR(LAST_PKMAP));
-#endif /* CONFIG_HIGHMEM */
-	pr_info("  * 0x%08lx..0x%08lx  : early ioremap\n",
-		ioremap_bot, ioremap_base);
-	pr_info("  * 0x%08lx..0x%08lx  : vmalloc & ioremap\n",
-		(unsigned long)VMALLOC_START, VMALLOC_END);
-#endif
 	mem_init_done = 1;
 }
 
@@ -347,6 +335,8 @@ asmlinkage void __init mmu_init(void)
 	 * inside 768MB limit */
 	memblock_set_current_limit(memory_start + lowmem_size - 1);
 
+	parse_early_param();
+
 	/* CMA initialization */
 	dma_contiguous_reserve(memory_start + lowmem_size - 1);
 }