/*!
* Init memory layout: using variables "from" linker script and multiboot info
*/
void k_memory_init ( unsigned long magic, unsigned long addr )
{
extern char kernel_code, k_kernel_end;
multiboot_info_t *mbi;
/* implicitly from kernel linker script */
k_kernel.start = &kernel_code;
k_kernel.size = ( (uint) &k_kernel_end ) - (uint) &kernel_code;
/* Am I booted by a Multiboot-compliant boot loader? */
if (magic != MULTIBOOT_BOOTLOADER_MAGIC)
{
kprint ( "Boot loader is not multiboot-compliant!\n" );
halt();
}
/* from multiboot info */
multiboot = addr;
mbi = (void *) addr;
k_heap.start = (void *) &k_kernel_end;
k_heap.size = ( mbi->mem_upper - 1024 ) * 1024 - (size_t) &k_kernel_end;
/* initialize dynamic memory allocation subsystem (needed for boot) */
k_mpool = k_mem_init ( k_heap.start, k_heap.size );
}
/*! Initial memory layout created in arch layer */
void k_memory_init ()
{
int i, j;
kprog_t *prog;
char *name;
mseg = arch_memory_init ();
/* initialize dynamic memory allocation subsystem */
for ( i = 0; mseg[i].type != MS_END && !k_mpool; i++ )
{
if ( mseg[i].type == MS_KHEAP )
{
k_mpool = k_mem_init ( mseg[i].start, mseg[i].size );
break;
}
}
ASSERT ( k_mpool );
list_init ( &progs );
/* look into each segment marked as module, add programs to 'progs' */
for ( i = 0; mseg[i].type != MS_END; i++ )
{
if ( mseg[i].type != MS_MODULE )
continue;
/*
* Is this segment a program?
* Programs have 'prog_name' in command line
*/
name = strstr ( mseg[i].name, PNAME );
if ( name )
{
prog = kmalloc ( sizeof (kprog_t) );
name += strlen ( PNAME );
for(j = 0; j < MAX_PROG_NAME_LEN && name[j] != ' '; j++)
prog->prog_name[j] = name[j];
prog->prog_name[j] = 0;
prog->pi = (void *) mseg[i].start;
prog->m = &mseg[i];
prog->started = FALSE;
list_append ( &progs, prog, &prog->list );
}
}
}
/*! Initial memory layout created in arch layer */
void k_memory_init ()
{
int i;
k_mpool = NULL;
mseg = arch_memory_init ();
/* find kernel heap */
for ( i = 0; mseg[i].type != MS_END && !k_mpool; i++ )
{
if ( mseg[i].type == MS_KHEAP )
{
k_mpool = k_mem_init ( mseg[i].start, mseg[i].size );
break;
}
}
ASSERT ( k_mpool );
}
/*!
* Init memory layout: using variables "from" linker script and multiboot info
*/
void k_memory_init ( unsigned long magic, unsigned long addr )
{
extern char kernel_code, k_kernel_end;
multiboot_info_t *mbi;
multiboot_module_t *mod;
prog_info_t *pi;
uint max;
int i;
char *name, *pos;
/* implicitly from kernel linker script */
k_kernel.start = &kernel_code;
k_kernel.size = ( (uint) &k_kernel_end ) - (uint) &kernel_code;
/* Am I booted by a Multiboot-compliant boot loader? */
if (magic != MULTIBOOT_BOOTLOADER_MAGIC)
{
kprint ( "Boot loader is not multiboot-compliant!\n" );
halt();
}
/* from multiboot info */
multiboot = addr;
mbi = (void *) addr;
max = (uint) &k_kernel_end;
prog.pi = NULL;
/* initialize modules */
if ( mbi->flags & MULTIBOOT_INFO_MODS )
{
mod = (void *) mbi->mods_addr;
for ( i = 0; i < mbi->mods_count; i++, mod++ )
{
if ( max < mod->mod_end )
max = mod->mod_end + 1;
/* Is this module a program?
Programs must have 'prog_name' in command line */
name = strstr ( (char *) mod->cmdline, PNAME );
if ( name && !prog.pi )
{
name += strlen ( PNAME );
pos = strchr ( name, ' ' );
if ( pos )
*pos++ = 0;
prog.prog_name = name;
pi = (void *) mod->mod_start;
prog.pi = pi->start_adr;
prog.m.start = prog.pi;
prog.m.size = (size_t) pi->end_adr -
(size_t) pi->start_adr + 1;
prog.started = FALSE;
memcpy ( prog.pi, pi, prog.m.size );
if ( max < (uint) pi->end_adr )
max = (uint) pi->end_adr + 1;
}
}
}
if ( max % ALIGN_TO )
max += ALIGN_TO - ( max % ALIGN_TO );
k_heap.start = (void *) max;
k_heap.size = ( mbi->mem_upper - 1024 ) * 1024 - max;
/* initialize dynamic memory allocation subsystem (needed for boot) */
k_mpool = k_mem_init ( k_heap.start, k_heap.size );
}
