Remove platform APIs which are not used by any code and which had only stub

implementations or no implementation on all platforms.

Some of these functions might be good ideas, but their semantics were unclear
given the lack of implementation, and an unlucky porter could be fooled into
trying to implement them or, worse, being baffled when something like
platform_trap_enter() failed to be called.

13 files changed, 3 insertions, 254 deletions

diff --git a/sys/mips/adm5120/adm5120_machdep.c b/sys/mips/adm5120/adm5120_machdep.c
index bc7b7b0..29079c8 100644
--- a/sys/mips/adm5120/adm5120_machdep.c
+++ b/sys/mips/adm5120/adm5120_machdep.c
@@ -116,19 +116,6 @@ mips_init(void)
 }
 
 void
-platform_halt(void)
-{
-
-}
-
-
-void
-platform_identify(void)
-{
-
-}
-
-void
 platform_reset(void)
 {
 
@@ -137,18 +124,6 @@ platform_reset(void)
 }
 
 void
-platform_trap_enter(void)
-{
-
-}
-
-void
-platform_trap_exit(void)
-{
-
-}
-
-void
 platform_start(__register_t a0 __unused, __register_t a1 __unused, 
     __register_t a2 __unused, __register_t a3 __unused)
 {
diff --git a/sys/mips/alchemy/alchemy_machdep.c b/sys/mips/alchemy/alchemy_machdep.c
index 047fa42..0593f83 100644
--- a/sys/mips/alchemy/alchemy_machdep.c
+++ b/sys/mips/alchemy/alchemy_machdep.c
@@ -117,19 +117,6 @@ mips_init(void)
 }
 
 void
-platform_halt(void)
-{
-
-}
-
-
-void
-platform_identify(void)
-{
-
-}
-
-void
 platform_reset(void)
 {
 
@@ -138,18 +125,6 @@ platform_reset(void)
 }
 
 void
-platform_trap_enter(void)
-{
-
-}
-
-void
-platform_trap_exit(void)
-{
-
-}
-
-void
 platform_start(__register_t a0 __unused, __register_t a1 __unused, 
     __register_t a2 __unused, __register_t a3 __unused)
 {
diff --git a/sys/mips/atheros/ar71xx_machdep.c b/sys/mips/atheros/ar71xx_machdep.c
index e9f7c2d..8ff9653 100644
--- a/sys/mips/atheros/ar71xx_machdep.c
+++ b/sys/mips/atheros/ar71xx_machdep.c
@@ -106,18 +106,6 @@ platform_cpu_init()
 }
 
 void
-platform_halt(void)
-{
-
-}
-
-void
-platform_identify(void)
-{
-
-}
-
-void
 platform_reset(void)
 {
 	ar71xx_device_stop(RST_RESET_FULL_CHIP);
@@ -126,18 +114,6 @@ platform_reset(void)
 		;
 }
 
-void
-platform_trap_enter(void)
-{
-
-}
-
-void
-platform_trap_exit(void)
-{
-
-}
-
 /*
  * Obtain the MAC address via the Redboot environment.
  */
diff --git a/sys/mips/idt/idt_machdep.c b/sys/mips/idt/idt_machdep.c
index 6c76c26..ac18748 100644
--- a/sys/mips/idt/idt_machdep.c
+++ b/sys/mips/idt/idt_machdep.c
@@ -82,19 +82,6 @@ platform_cpu_init()
 }
 
 void
-platform_halt(void)
-{
-
-}
-
-
-void
-platform_identify(void)
-{
-
-}
-
-void
 platform_reset(void)
 {
 	volatile unsigned int * p = (void *)0xb8008000;
@@ -111,18 +98,6 @@ platform_reset(void)
 }
 
 void
-platform_trap_enter(void)
-{
-
-}
-
-void
-platform_trap_exit(void)
-{
-
-}
-
-void
 platform_start(__register_t a0, __register_t a1,
     __register_t a2 __unused, __register_t a3 __unused)
 {
diff --git a/sys/mips/include/hwfunc.h b/sys/mips/include/hwfunc.h
index a9e3285..5c797fc 100644
--- a/sys/mips/include/hwfunc.h
+++ b/sys/mips/include/hwfunc.h
@@ -30,14 +30,11 @@
 
 #include <sys/_cpuset.h>
 
-struct trapframe;
 struct timecounter;
+
 /*
- * Hooks downward into hardware functionality.
+ * Hooks downward into platform functionality.
  */
-
-void platform_halt(void);
-void platform_intr(struct trapframe *);
 void platform_reset(void);
 void platform_start(__register_t, __register_t,  __register_t, __register_t);
 
@@ -48,7 +45,6 @@ unsigned platform_get_timecount(struct timecounter *);
 
 /* For hardware specific CPU initialization */
 void platform_cpu_init(void);
-void platform_secondary_init(void);
 
 #ifdef SMP
 
@@ -100,6 +96,6 @@ extern void platform_cpu_mask(cpuset_t *mask);
  */
 struct cpu_group *platform_smp_topo(void);
 
-
 #endif	/* SMP */
+
 #endif /* !_MACHINE_HWFUNC_H_ */
diff --git a/sys/mips/include/md_var.h b/sys/mips/include/md_var.h
index 00ff95a..6b3d0fc 100644
--- a/sys/mips/include/md_var.h
+++ b/sys/mips/include/md_var.h
@@ -76,9 +76,6 @@ void	mips_pcpu0_init(void);
 void	mips_proc0_init(void);
 void	mips_postboot_fixup(void);
 
-/* Platform call-downs. */
-void	platform_identify(void);
-
 extern int busdma_swi_pending;
 void	busdma_swi(void);
 
diff --git a/sys/mips/include/trap.h b/sys/mips/include/trap.h
index d8042382..32bf1a8 100644
--- a/sys/mips/include/trap.h
+++ b/sys/mips/include/trap.h
@@ -118,10 +118,4 @@ void MipsUserIntr(void);
 
 register_t trap(struct trapframe *);
 
-#ifndef LOCORE /* XXX */
-int check_address(void *);
-void platform_trap_enter(void);
-void platform_trap_exit(void);
-#endif
-
 #endif /* !_MACHINE_TRAP_H_ */
diff --git a/sys/mips/malta/malta_machdep.c b/sys/mips/malta/malta_machdep.c
index 0ff34cb..8efb987 100644
--- a/sys/mips/malta/malta_machdep.c
+++ b/sys/mips/malta/malta_machdep.c
@@ -199,19 +199,6 @@ mips_init(void)
 #endif
 }
 
-void
-platform_halt(void)
-{
-
-}
-
-
-void
-platform_identify(void)
-{
-
-}
-
 /*
  * Perform a board-level soft-reset.
  * Note that this is not emulated by gxemul.
@@ -225,18 +212,6 @@ platform_reset(void)
 	*c = MALTA_GORESET;
 }
 
-void
-platform_trap_enter(void)
-{
-
-}
-
-void
-platform_trap_exit(void)
-{
-
-}
-
 static uint64_t
 malta_cpu_freq(void)
 {
diff --git a/sys/mips/nlm/xlp_machdep.c b/sys/mips/nlm/xlp_machdep.c
index 5bdb6d9..39854fb 100644
--- a/sys/mips/nlm/xlp_machdep.c
+++ b/sys/mips/nlm/xlp_machdep.c
@@ -561,22 +561,6 @@ platform_cpu_init()
 }
 
 void
-platform_identify(void)
-{
-
-	printf("XLP Eval Board\n");
-}
-
-/*
- * XXX Maybe return the state of the watchdog in enter, and pass it to
- * exit?  Like spl().
- */
-void
-platform_trap_enter(void)
-{
-}
-
-void
 platform_reset(void)
 {
 	uint64_t sysbase = nlm_get_sys_regbase(0);
@@ -586,11 +570,6 @@ platform_reset(void)
 		__asm __volatile("wait");
 }
 
-void
-platform_trap_exit(void)
-{
-}
-
 #ifdef SMP
 /*
  * XLP threads are started simultaneously when we enable threads, this will
diff --git a/sys/mips/rmi/xlr_machdep.c b/sys/mips/rmi/xlr_machdep.c
index 836c605..d6fdf43 100644
--- a/sys/mips/rmi/xlr_machdep.c
+++ b/sys/mips/rmi/xlr_machdep.c
@@ -517,19 +517,6 @@ platform_cpu_init()
 }
 
 void
-platform_identify(void)
-{
-
-	printf("Board [%d:%d], processor 0x%08x\n", (int)xlr_boot1_info.board_major_version,
-	    (int)xlr_boot1_info.board_minor_version, mips_rd_prid());
-}
-
-void
-platform_trap_enter(void)
-{
-}
-
-void
 platform_reset(void)
 {
 	xlr_reg_t *mmio = xlr_io_mmio(XLR_IO_GPIO_OFFSET);
@@ -538,11 +525,6 @@ platform_reset(void)
 	xlr_write_reg(mmio, 8, 1);
 }
 
-void
-platform_trap_exit(void)
-{
-}
-
 #ifdef SMP
 int xlr_ap_release[MAXCPU];
 
diff --git a/sys/mips/rt305x/rt305x_machdep.c b/sys/mips/rt305x/rt305x_machdep.c
index a388b4f..33c131c 100644
--- a/sys/mips/rt305x/rt305x_machdep.c
+++ b/sys/mips/rt305x/rt305x_machdep.c
@@ -118,19 +118,6 @@ mips_init(void)
 }
 
 void
-platform_halt(void)
-{
-
-}
-
-
-void
-platform_identify(void)
-{
-
-}
-
-void
 platform_reset(void)
 {
 
@@ -139,18 +126,6 @@ platform_reset(void)
 }
 
 void
-platform_trap_enter(void)
-{
-
-}
-
-void
-platform_trap_exit(void)
-{
-
-}
-
-void
 platform_start(__register_t a0 __unused, __register_t a1 __unused, 
     __register_t a2 __unused, __register_t a3 __unused)
 {
diff --git a/sys/mips/sentry5/s5_machdep.c b/sys/mips/sentry5/s5_machdep.c
index 134f05b..cde081b 100644
--- a/sys/mips/sentry5/s5_machdep.c
+++ b/sys/mips/sentry5/s5_machdep.c
@@ -144,19 +144,6 @@ mips_init(void)
 }
 
 void
-platform_halt(void)
-{
-
-}
-
-
-void
-platform_identify(void)
-{
-
-}
-
-void
 platform_reset(void)
 {
 
@@ -168,18 +155,6 @@ platform_reset(void)
 }
 
 void
-platform_trap_enter(void)
-{
-
-}
-
-void
-platform_trap_exit(void)
-{
-
-}
-
-void
 platform_start(__register_t a0, __register_t a1, __register_t a2,
 	       __register_t a3)
 {
diff --git a/sys/mips/sibyte/sb_machdep.c b/sys/mips/sibyte/sb_machdep.c
index 304d036..452eea6 100644
--- a/sys/mips/sibyte/sb_machdep.c
+++ b/sys/mips/sibyte/sb_machdep.c
@@ -272,19 +272,6 @@ mips_init(void)
 }
 
 void
-platform_halt(void)
-{
-
-}
-
-
-void
-platform_identify(void)
-{
-
-}
-
-void
 platform_reset(void)
 {
 	
@@ -295,18 +282,6 @@ platform_reset(void)
 	sb_system_reset();
 }
 
-void
-platform_trap_enter(void)
-{
-
-}
-
-void
-platform_trap_exit(void)
-{
-
-}
-
 static void
 kseg0_map_coherent(void)
 {