powerpc bootloader: Remove warnings

This code is shared by multiple PowerPC BSPs including all
motorola_powerpc variants.

c/src/lib/libbsp/powerpc/shared/bootloader/bootldr.h

@@ -1,6 +1,8 @@
 /*
  *  bootldr.h -- Include file for bootloader.
- *
+ */
+
+/*
  *  Copyright (C) 1998, 1999 Gabriel Paubert, paubert@iram.es
  *
  *  Modified to compile in RTEMS development environment
@@ -206,6 +208,19 @@ void cleanup_v86_mess(void);
 void em86_main(struct pci_dev *);
 int find_max_mem(struct pci_dev *);
 
+/*
+ * Prototypes for calls from assembly and across files.
+ */
+typedef struct _x86 x86;
+
+int em86_trap(x86 *p);
+void decompress_kernel(int kernel_size, void * zimage_start, int len,
+		       void * initrd_start, int initrd_len );
+void boot_udelay(uint32_t _microseconds);
+void setup_hw(void);
+void _handler(int vec, ctxt *p);
+int early_setup(u_long image_size);
+void mm_init(u_long image_size);
 #endif
 
 #ifdef ASM

c/src/lib/libbsp/powerpc/shared/bootloader/em86.c

@@ -1,6 +1,8 @@
 /*
  *  em86.c -- Include file for bootloader.
- *
+ */
+
+/*
  *  Copyright (C) 1998, 1999 Gabriel Paubert, paubert@iram.es
  *
  *  Modified to compile in RTEMS development environment
@@ -132,7 +134,7 @@ static void dump86(x86 * p){
 #define dump86(x)
 #endif
 
-int bios86pci(x86 * p) {
+static int bios86pci(x86 * p) {
 	unsigned reg=ld_le16(&DI);
 	reg_type2 tmp;
 
@@ -190,21 +192,21 @@ int bios86pci(x86 * p) {
 	return 0;
 }
 
-void push2(x86 *p, unsigned value) {
+static void push2(x86 *p, unsigned value) {
   	unsigned char * sbase= p->ssbase;
 	unsigned newsp = (ld_le16(&SP)-2)&0xffff;
 	st_le16(&SP,newsp);
 	st_le16((unsigned short *)(sbase+newsp), value);
 }
 
-unsigned pop2(x86 *p) {
+static unsigned pop2(x86 *p) {
   	unsigned char * sbase=p->ssbase;
 	unsigned oldsp = ld_le16(&SP);
 	st_le16(&SP,oldsp+2);
 	return ld_le16((unsigned short *)(sbase+oldsp));
 }
 
-int int10h(x86 * p) { /* Process BIOS video interrupt */
+static int int10h(x86 * p) { /* Process BIOS video interrupt */
   	unsigned vector;
 	vector=ld_le32((uint32_t *)p->vbase+0x10);
 	if (((vector&0xffff0000)>>16)==0xc000) {
@@ -240,7 +242,7 @@ int int10h(x86 * p) { /* Process BIOS video interrupt */
 	}
 }
 
-int process_softint(x86 * p) {
+static int process_softint(x86 * p) {
 #if 0
   	if (p->parm1!=0x10 || AH!=0x0e) {
 		printf("Soft interrupt\n");

c/src/lib/libbsp/powerpc/shared/bootloader/lib.c

@@ -5,14 +5,26 @@
  *  from newlib or rtems  because they are not compiled with the right option!!!
  *
  *  You've been warned!!!.
- *
- *  CopyRight (C) 1998, 1999 valette@crf.canon.fr
+ */
+
+/*
+ *  Copyright (C) 1998, 1999 valette@crf.canon.fr
  *
  *  The license and distribution terms for this file may be
  *  found in the file LICENSE in this distribution or at
  *  http://www.rtems.org/license/LICENSE.
  */
 
+
+/*
+ * Provide our own prototypes to avoid warnings and risk getting inlined
+ * conflicts from the normal header files.
+ */
+void* memset(void *p, int c, unsigned int n);
+void* memcpy(void *dst, const void * src, unsigned int n);
+char* strcat(char * dest, const char * src);
+int strlen(const char* string);
+
 void* memset(void *p, int c, unsigned int n)
 {
   char *q =p;

c/src/lib/libbsp/powerpc/shared/bootloader/misc.c

@@ -86,7 +86,7 @@ void hang(const char *s, u_long x, ctxt *p) {
 	exit();
 };
 
-void *zalloc(void *x, unsigned items, unsigned size)
+static void *zalloc(void *x, unsigned items, unsigned size)
 {
 	void *p = salloc(items*size);
 
@@ -96,7 +96,7 @@ void *zalloc(void *x, unsigned items, unsigned size)
 	return p;
 }
 
-void zfree(void *x, void *addr, unsigned nb)
+static void zfree(void *x, void *addr, unsigned nb)
 {
 	sfree(addr);
 }
@@ -230,7 +230,9 @@ void decompress_kernel(int kernel_size, void * zimage_start, int len,
 
 static int ticks_per_ms=0;
 
-/* this is from rtems_bsp_delay from libcpu */
+/*
+ * This is based on rtems_bsp_delay from libcpu
+ */
 void
 boot_udelay(uint32_t _microseconds)
 {
@@ -252,9 +254,6 @@ setup_hw(void)
 	struct pci_dev *default_vga;
 	int timer, err;
 	u_short default_vga_cmd;
-	static unsigned int indic;
-
-	indic = 0;
 
 	res=bd->residual;
 	default_vga=NULL;

c/src/lib/libbsp/powerpc/shared/bootloader/mm.c

@@ -129,7 +129,6 @@ void print_maps(map *, const char *);
 /* The handler used for all exceptions although for now it is only
  * designed to properly handle MMU interrupts to fill the hash table.
  */
-
 void _handler(int vec, ctxt *p) {
 	map *area;
 	struct _mm_private *mm = (struct _mm_private *) bd->mm_private;
@@ -424,7 +423,7 @@ MEM_MAP seg_fix[] = {
  * data. This routine changes some things in a way that the bootloader and
  * linux are happy.
  */
-void
+static void
 fix_residual( RESIDUAL *res )
 {
 #if 0

c/src/lib/libbsp/powerpc/shared/bootloader/pci.c

@@ -713,7 +713,7 @@ static const struct pci_bootloader_config_access_functions direct_functions = {
    direct_pci_write_config_dword
 };
 
-void pci_read_bases(struct pci_dev *dev, unsigned int howmany)
+static void pci_read_bases(struct pci_dev *dev, unsigned int howmany)
 {
    unsigned int reg, nextreg;
 
@@ -798,7 +798,7 @@ void pci_read_bases(struct pci_dev *dev, unsigned int howmany)
    }
 }
 
-u_int pci_scan_bus(struct pci_bus *bus)
+static u_int pci_scan_bus(struct pci_bus *bus)
 {
    unsigned int devfn, max;
    uint32_t class;

c/src/lib/libbsp/powerpc/shared/console/polled_io.c

@@ -443,15 +443,15 @@ int debug_tstc(void)
 
 #define vidmem ((__io_ptr)(ptr_mem_map->isa_mem_base+0xb8000))
 
-void vacuum_putc(u_char c) {
+static void vacuum_putc(u_char c) {
 	console_global_data.vacuum_sent++;
 }
 
-int vacuum_getc(void) {
+static int vacuum_getc(void) {
 	return -1;
 }
 
-int vacuum_tstc(void) {
+static int vacuum_tstc(void) {
 	return 0;
 }
 
@@ -496,7 +496,7 @@ static void pfree(void* p)
 }
 #endif
 
-void log_putc(const u_char c) {
+static void log_putc(const u_char c) {
 	console_log *l;
 	for(l=console_global_data.log; l; l=l->next) {
 		if (l->offset<PAGE_LOG_CHARS) break;
@@ -549,19 +549,19 @@ void flush_log(void) {
 #error "BSP probably didn't define a console port"
 #endif
 
-void serial_putc(const u_char c)
+static void serial_putc(const u_char c)
 {
 	while ((INL_CONSOLE_INB(lsr) & LSR_THRE) == 0) ;
 	INL_CONSOLE_OUTB(thr, c);
 }
 
-int serial_getc(void)
+static int serial_getc(void)
 {
 	while ((INL_CONSOLE_INB(lsr) & LSR_DR) == 0) ;
 	return (INL_CONSOLE_INB(rbr));
 }
 
-int serial_tstc(void)
+static int serial_tstc(void)
 {
 	return ((INL_CONSOLE_INB(lsr) & LSR_DR) != 0);
 }
@@ -592,7 +592,7 @@ cursor(int x, int y)
 	vga_outb(0x15, pos);
 }
 
-void
+static void
 vga_putc(const u_char c)
 {
 	int x,y;
@@ -811,7 +811,7 @@ int kbdreset(void)
 	return 0;
 }
 
-int kbd_tstc(void)
+static int kbd_tstc(void)
 {
 	return ((kbd_inb(KBD_STATUS_REG) & KBD_STAT_OBF) != 0);
 }
@@ -895,6 +895,7 @@ void  printk(const char *fmt, ...) {
 
 	va_start(args, fmt);
 	i = k_vsprintf(buf, fmt, args);
+	(void) i; /* avoid set but not used warning */
 	va_end(args);
 	my_puts((u_char*)buf);
 }