[syslinux:elflink] init: Fix up compiler warnings

[syslinux-bot for Matt Fleming]

Commit-ID:  89a895892ee63536535a2a2af3c034559b2acb9a
Gitweb:     http://www.syslinux.org/commit/89a895892ee63536535a2a2af3c034559b2acb9a
Author:     Matt Fleming <matt.fleming at intel.com>
AuthorDate: Tue, 3 Apr 2012 13:55:51 +0100
Committer:  Matt Fleming <matt.fleming at intel.com>
CommitDate: Tue, 17 Apr 2012 10:58:35 +0100

init: Fix up compiler warnings

Fix up the following compiler warnings by including appropriate
headers, applying some casts, and changing some data types,

init.c:7:1: warning: large integer implicitly truncated to unsigned type
init.c: In function ‘check_escapes’:
init.c:32:10: warning: cast from pointer to integer of different size
init.c:46:4: warning: implicit declaration of function ‘writestr’
init.c: In function ‘bios_timer_init’:
init.c:57:19: warning: initialization makes pointer from integer without a cast
init.c:61:8: warning: assignment makes integer from pointer without a cast
init.c: In function ‘init’:
init.c:74:2: warning: implicit declaration of function ‘adjust_screen’
init.c:75:2: warning: implicit declaration of function ‘printf_init’

Signed-off-by: Matt Fleming <matt.fleming at intel.com>

---
 core/init.c |    9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/core/init.c b/core/init.c
index c1ba298..fab1ad4 100644
--- a/core/init.c
+++ b/core/init.c
@@ -4,7 +4,7 @@
 #include <fs.h>
 #include <bios.h>
 
-static uint16_t min_lowmem_heap = 65536;
+static uint32_t min_lowmem_heap = 65536;
 extern char __lowmem_heap[];
 uint8_t KbdFlags;		/* Check for keyboard escapes */
 
@@ -29,7 +29,7 @@ static inline void check_escapes(void)
 
 		__intcall(0x12, &ireg, &oreg);
 
-		mem = ((uint16_t)__lowmem_heap) + min_lowmem_heap + 1023;
+		mem = ((uint32_t)__lowmem_heap) + min_lowmem_heap + 1023;
 		mem = mem >> 10;
 
 		if (mem < oreg.eax.w[0]) {
@@ -54,13 +54,14 @@ extern uint32_t timer_irq;
 static inline void bios_timer_init(void)
 {
 	unsigned long next;
-	uint32_t *hook = BIOS_timer_hook;
+	uint32_t *hook = (uint32_t *)BIOS_timer_hook;
 
 	next = *hook;
 	BIOS_timer_next = next;
-	*hook = &timer_irq;
+	*hook = (uint32_t)&timer_irq;
 }
 
+extern void printf_init(void);
 void init(com32sys_t *regs)
 {
 	int i;