Merge tag 'xtensa-20200206' of git://github.com/jcmvbkbc/linux-xtensa

Pull xtensa updates from Max Filippov:

 - reorganize exception vectors placement

 - small cleanups (drop unused functions/headers/defconfig entries,
   spelling fixes)

* tag 'xtensa-20200206' of git://github.com/jcmvbkbc/linux-xtensa:
  xtensa: ISS: improve simcall assembly
  xtensa: reorganize vectors placement
  xtensa: separate SMP and XIP support
  xtensa: move fast exception handlers close to vectors
  arch/xtensa: fix Kconfig typos for HAVE_SMP
  xtensa: clean up optional XCHAL_* definitions
  xtensa: drop unused function fast_coprocessor_double
  xtensa: drop empty platform_* functions from platforms
  xtensa: clean up platform headers
  xtensa: drop set_except_vector declaration
  xtensa: configs: Cleanup old Kconfig IO scheduler options

3 files changed, 8 insertions, 42 deletions

diff --git a/arch/xtensa/platforms/iss/include/platform/simcall.h b/arch/xtensa/platforms/iss/include/platform/simcall.h
index 4e2a48380dbf..f42870ab551b 100644
--- a/arch/xtensa/platforms/iss/include/platform/simcall.h
+++ b/arch/xtensa/platforms/iss/include/platform/simcall.h
@@ -66,19 +66,17 @@ static int errno;
 
 static inline int __simc(int a, int b, int c, int d)
 {
-	int ret;
 	register int a1 asm("a2") = a;
 	register int b1 asm("a3") = b;
 	register int c1 asm("a4") = c;
 	register int d1 asm("a5") = d;
 	__asm__ __volatile__ (
 			"simcall\n"
-			"mov %0, a2\n"
-			"mov %1, a3\n"
-			: "=a" (ret), "=a" (errno), "+r"(a1), "+r"(b1)
+			: "+r"(a1), "+r"(b1)
 			: "r"(c1), "r"(d1)
 			: "memory");
-	return ret;
+	errno = b1;
+	return a1;
 }
 
 static inline int simc_exit(int exit_code)
diff --git a/arch/xtensa/platforms/iss/setup.c b/arch/xtensa/platforms/iss/setup.c
index e28dd53d7df5..ed519aee0ec8 100644
--- a/arch/xtensa/platforms/iss/setup.c
+++ b/arch/xtensa/platforms/iss/setup.c
@@ -11,32 +11,18 @@
  * Copyright 2001 - 2005 Tensilica Inc.
  * Copyright 2017 Cadence Design Systems Inc.
  */
-#include <linux/memblock.h>
-#include <linux/stddef.h>
-#include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/errno.h>
-#include <linux/reboot.h>
-#include <linux/kdev_t.h>
-#include <linux/types.h>
-#include <linux/major.h>
-#include <linux/blkdev.h>
-#include <linux/console.h>
-#include <linux/delay.h>
-#include <linux/stringify.h>
+#include <linux/kernel.h>
 #include <linux/notifier.h>
+#include <linux/printk.h>
+#include <linux/string.h>
 
 #include <asm/platform.h>
-#include <asm/bootparam.h>
 #include <asm/setup.h>
 
 #include <platform/simcall.h>
 
 
-void __init platform_init(bp_tag_t* bootparam)
-{
-}
-
 void platform_halt(void)
 {
 	pr_info(" ** Called platform_halt() **\n");
@@ -48,6 +34,7 @@ void platform_power_off(void)
 	pr_info(" ** Called platform_power_off() **\n");
 	simc_exit(0);
 }
+
 void platform_restart(void)
 {
 	/* Flush and reset the mmu, simulate a processor reset, and
@@ -56,10 +43,6 @@ void platform_restart(void)
 	/* control never gets here */
 }
 
-void platform_heartbeat(void)
-{
-}
-
 static int
 iss_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
 {
diff --git a/arch/xtensa/platforms/xtfpga/setup.c b/arch/xtensa/platforms/xtfpga/setup.c
index 829115bb381f..4f7d6142d41f 100644
--- a/arch/xtensa/platforms/xtfpga/setup.c
+++ b/arch/xtensa/platforms/xtfpga/setup.c
@@ -24,6 +24,7 @@
 #include <linux/of.h>
 #include <linux/clk-provider.h>
 #include <linux/of_address.h>
+#include <linux/slab.h>
 
 #include <asm/timex.h>
 #include <asm/processor.h>
@@ -56,22 +57,6 @@ void platform_restart(void)
 	/* control never gets here */
 }
 
-void __init platform_setup(char **cmdline)
-{
-}
-
-/* early initialization */
-
-void __init platform_init(bp_tag_t *first)
-{
-}
-
-/* Heartbeat. */
-
-void platform_heartbeat(void)
-{
-}
-
 #ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
 
 void __init platform_calibrate_ccount(void)