From 44a9935465b1cd79547807a431232177362ef43e Mon Sep 17 00:00:00 2001
From: Blue Swirl <blauwirbel@gmail.com>
Date: Sat, 7 Nov 2009 10:05:03 +0000
Subject: [PATCH] Sparc64/x86: remove unneeded calls to device reset

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
---
 hw/ide/cmd646.c |  1 -
 hw/parallel.c   |  2 --
 hw/pckbd.c      |  2 --
 hw/ps2.c        |  2 --
 hw/sun4u.c      | 16 +++++++++-------
 5 files changed, 9 insertions(+), 14 deletions(-)

diff --git a/hw/ide/cmd646.c b/hw/ide/cmd646.c
index ea116fce71..45e2cdb9a5 100644
--- a/hw/ide/cmd646.c
+++ b/hw/ide/cmd646.c
@@ -235,7 +235,6 @@ static int pci_cmd646_ide_initfn(PCIDevice *dev)
 
     vmstate_register(0, &vmstate_ide_pci, d);
     qemu_register_reset(cmd646_reset, d);
-    cmd646_reset(d);
     return 0;
 }
 
diff --git a/hw/parallel.c b/hw/parallel.c
index 79fa8f66b4..5ae8348da0 100644
--- a/hw/parallel.c
+++ b/hw/parallel.c
@@ -471,7 +471,6 @@ static int parallel_isa_initfn(ISADevice *dev)
 
     base = isa->iobase;
     isa_init_irq(dev, &s->irq, isa->isairq);
-    parallel_reset(s);
     qemu_register_reset(parallel_reset, s);
 
     if (qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_READ_STATUS, &dummy) == 0) {
@@ -576,7 +575,6 @@ ParallelState *parallel_mm_init(target_phys_addr_t base, int it_shift, qemu_irq
     s->irq = irq;
     s->chr = chr;
     s->it_shift = it_shift;
-    parallel_reset(s);
     qemu_register_reset(parallel_reset, s);
 
     io_sw = cpu_register_io_memory(parallel_mm_read_sw, parallel_mm_write_sw, s);
diff --git a/hw/pckbd.c b/hw/pckbd.c
index c049047aea..a81b303dae 100644
--- a/hw/pckbd.c
+++ b/hw/pckbd.c
@@ -397,7 +397,6 @@ void i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq,
     s->irq_mouse = mouse_irq;
     s->mask = mask;
 
-    kbd_reset(s);
     vmstate_register(0, &vmstate_kbd, s);
     s_io_memory = cpu_register_io_memory(kbd_mm_read, kbd_mm_write, s);
     cpu_register_physical_memory(base, size, s_io_memory);
@@ -422,7 +421,6 @@ static int i8042_initfn(ISADevice *dev)
     isa_init_irq(dev, &s->irq_kbd, 1);
     isa_init_irq(dev, &s->irq_mouse, 12);
 
-    kbd_reset(s);
     vmstate_register(0, &vmstate_kbd, s);
     register_ioport_read(0x60, 1, 1, kbd_read_data, s);
     register_ioport_write(0x60, 1, 1, kbd_write_data, s);
diff --git a/hw/ps2.c b/hw/ps2.c
index 0644e01c49..15a6650a6a 100644
--- a/hw/ps2.c
+++ b/hw/ps2.c
@@ -593,7 +593,6 @@ void *ps2_kbd_init(void (*update_irq)(void *, int), void *update_arg)
     s->common.update_irq = update_irq;
     s->common.update_arg = update_arg;
     s->scancode_set = 2;
-    ps2_kbd_reset(s);
     vmstate_register(0, &vmstate_ps2_keyboard, s);
     qemu_add_kbd_event_handler(ps2_put_keycode, s);
     qemu_register_reset(ps2_kbd_reset, s);
@@ -606,7 +605,6 @@ void *ps2_mouse_init(void (*update_irq)(void *, int), void *update_arg)
 
     s->common.update_irq = update_irq;
     s->common.update_arg = update_arg;
-    ps2_mouse_reset(s);
     vmstate_register(0, &vmstate_ps2_mouse, s);
     qemu_add_mouse_event_handler(ps2_mouse_event, s, 0, "QEMU PS/2 Mouse");
     qemu_register_reset(ps2_mouse_reset, s);
diff --git a/hw/sun4u.c b/hw/sun4u.c
index 0c7cea67d9..8f11442f08 100644
--- a/hw/sun4u.c
+++ b/hw/sun4u.c
@@ -268,13 +268,14 @@ static void cpu_set_irq(void *opaque, int irq, int level)
 
 typedef struct ResetData {
     CPUState *env;
-    uint64_t reset_addr;
+    uint64_t prom_addr;
 } ResetData;
 
 static void main_cpu_reset(void *opaque)
 {
     ResetData *s = (ResetData *)opaque;
     CPUState *env = s->env;
+    static unsigned int nr_resets;
 
     cpu_reset(env);
     env->tick_cmpr = TICK_INT_DIS | 0;
@@ -289,7 +290,12 @@ static void main_cpu_reset(void *opaque)
     env->gregs[1] = 0; // Memory start
     env->gregs[2] = ram_size; // Memory size
     env->gregs[3] = 0; // Machine description XXX
-    env->pc = s->reset_addr;
+    if (nr_resets++ == 0) {
+        /* Power on reset */
+        env->pc = s->prom_addr + 0x20ULL;
+    } else {
+        env->pc = s->prom_addr + 0x40ULL;
+    }
     env->npc = env->pc + 4;
 }
 
@@ -544,12 +550,8 @@ static CPUState *cpu_devinit(const char *cpu_model, const struct hwdef *hwdef)
 
     reset_info = qemu_mallocz(sizeof(ResetData));
     reset_info->env = env;
-    reset_info->reset_addr = hwdef->prom_addr + 0x40ULL;
+    reset_info->prom_addr = hwdef->prom_addr;
     qemu_register_reset(main_cpu_reset, reset_info);
-    main_cpu_reset(reset_info);
-    // Override warm reset address with cold start address
-    env->pc = hwdef->prom_addr + 0x20ULL;
-    env->npc = env->pc + 4;
 
     return env;
 }