void free_initmem(void)
{
const unsigned long text_delta = MEM_SV_START - PAGE_OFFSET;
/*
* Evict the cache on all cores to avoid incoherence.
* We are guaranteed that no one will touch the init pages any more.
*/
homecache_evict(&cpu_cacheable_map);
/* Free the data pages that we won't use again after init. */
free_init_pages("unused kernel data",
(unsigned long)__init_begin,
(unsigned long)__init_end);
/*
* Free the pages mapped from 0xc0000000 that correspond to code
* pages from MEM_SV_START that we won't use again after init.
*/
free_init_pages("unused kernel text",
(unsigned long)_sinittext - text_delta,
(unsigned long)_einittext - text_delta);
/* Do a global TLB flush so everyone sees the changes. */
flush_tlb_all();
}
void free_initmem(void)
{
const unsigned long text_delta = MEM_SV_INTRPT - PAGE_OFFSET;
/*
* Evict the dirty initdata on the boot cpu, evict the w1data
* wherever it's homed, and evict all the init code everywhere.
* We are guaranteed that no one will touch the init pages any
* more, and although other cpus may be touching the w1data,
* we only actually change the caching on tile64, which won't
* be keeping local copies in the other tiles' caches anyway.
*/
homecache_evict(&cpu_cacheable_map);
/* Free the data pages that we won't use again after init. */
free_init_pages("unused kernel data",
(unsigned long)_sinitdata,
(unsigned long)_einitdata);
/*
* Free the pages mapped from 0xc0000000 that correspond to code
* pages from MEM_SV_INTRPT that we won't use again after init.
*/
free_init_pages("unused kernel text",
(unsigned long)_sinittext - text_delta,
(unsigned long)_einittext - text_delta);
#if !CHIP_HAS_COHERENT_LOCAL_CACHE()
/*
* Upgrade the .w1data section to globally cached.
* We don't do this on tilepro, since the cache architecture
* pretty much makes it irrelevant, and in any case we end
* up having racing issues with other tiles that may touch
* the data after we flush the cache but before we update
* the PTEs and flush the TLBs, causing sharer shootdowns
* later. Even though this is to clean data, it seems like
* an unnecessary complication.
*/
mark_w1data_ro();
#endif
/* Do a global TLB flush so everyone sees the changes. */
flush_tlb_all();
}
void __init prom_free_prom_memory(void)
{
unsigned long addr;
int i;
for (i = 0; i < boot_mem_map.nr_map; i++) {
if (boot_mem_map.map[i].type != BOOT_MEM_ROM_DATA)
continue;
addr = boot_mem_map.map[i].addr;
free_init_pages("YAMON memory",
addr, addr + boot_mem_map.map[i].size);
}
}
void __init prom_free_prom_memory(void)
{
unsigned long addr;
int i;
if (prom_flags & PROM_FLAG_DONT_FREE_TEMP)
return;
for (i = 0; i < boot_mem_map.nr_map; i++) {
if (boot_mem_map.map[i].type != BOOT_MEM_ROM_DATA)
continue;
addr = boot_mem_map.map[i].addr;
free_init_pages("prom memory",
addr, addr + boot_mem_map.map[i].size);
}
}
void __init prom_free_prom_memory(void)
{
unsigned long end;
/*
* Free everything below the kernel itself but leave
* the first page reserved for the exception handlers.
*/
#if defined(CONFIG_DECLANCE) || defined(CONFIG_DECLANCE_MODULE)
if (IOASIC)
end = __pa(&_text) - 0x00020000;
else
#endif
end = __pa(&_text);
free_init_pages("unused PROM memory", PAGE_SIZE, end);
}
void __init prom_free_prom_memory(void)
{
#ifdef DEBUG
/* Nothing to do! Need only for DEBUG. */
/* This is may be corrupt working memory. */
unsigned long addr;
int i;
for (i = 0; i < boot_mem_map.nr_map; i++) {
if (boot_mem_map.map[i].type != BOOT_MEM_ROM_DATA)
continue;
addr = boot_mem_map.map[i].addr;
free_init_pages("prom memory", addr, addr + boot_mem_map.map[i].size);
}
#endif
}
void __init prom_free_prom_memory(void)
{
unsigned long end;
/*
* Free everything below the kernel itself but leave
* the first page reserved for the exception handlers.
*/
#if IS_ENABLED(CONFIG_DECLANCE)
/*
* Leave 128 KB reserved for Lance memory for
* IOASIC DECstations.
*
* XXX: save this address for use in dec_lance.c?
*/
if (IOASIC)
end = __pa(&_text) - 0x00020000;
else
#endif
end = __pa(&_text);
free_init_pages("unused PROM memory", PAGE_SIZE, end);
}
void __init prom_free_prom_memory(void)
{
unsigned long end;
/*
*/
#if defined(CONFIG_DECLANCE) || defined(CONFIG_DECLANCE_MODULE)
/*
*/
if (IOASIC)
end = __pa(&_text) - 0x00020000;
else
#endif
end = __pa(&_text);
free_init_pages("unused PROM memory", PAGE_SIZE, end);
}
void free_initrd_mem(unsigned long start, unsigned long end)
{
free_init_pages("initrd memory", start, end);
}
/*
* recycle memory containing stuff only required for initialisation
*/
void free_initmem(void)
{
free_init_pages("unused kernel memory",
(unsigned long) &__init_begin,
(unsigned long) &__init_end);
}
static void free_init_pages_eva_malta(void *begin, void *end)
{
free_init_pages("unused kernel", __pa_symbol((unsigned long *)begin),
__pa_symbol((unsigned long *)end));
}
void __init_refok free_initmem(void)
{
free_init_pages("unused kernel memory",
__pa(&__init_begin),
__pa(&__init_end));
}
void free_initrd_mem(unsigned long start, unsigned long end)
{
free_init_pages("initrd memory",
virt_to_phys((void *) start),
virt_to_phys((void *) end));
}
void __init free_initrd_mem(unsigned long start, unsigned long end) {
free_init_pages("initrd", start, end);
}