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#include <common.h>
#include <asm/processor.h>
#include <asm/mmu.h>
#include <ioports.h>
#include <lmb.h>
#include <asm/io.h>
#include "mp.h"
DECLARE_GLOBAL_DATA_PTR;
#if (CONFIG_NUM_CPUS > 1)
void cpu_mp_lmb_reserve(struct lmb *lmb)
{
u32 bootpg;
/* if we have 4G or more of memory, put the boot page at 4Gb-1M */
if ((u64)gd->ram_size > 0xfffff000)
bootpg = 0xfff00000;
else
bootpg = gd->ram_size - (1024 * 1024);
/* tell u-boot we stole a page */
lmb_reserve(lmb, bootpg, 4096);
}
/*
* Copy the code for other cpus to execute into an
* aligned location accessible via BPTR
*/
void setup_mp(void)
{
extern ulong __secondary_start_page;
ulong fixup = (ulong)&__secondary_start_page;
u32 bootpg;
u32 bootpg_va;
/*
* If we have 4G or more of memory, put the boot page at 4Gb-1M.
* Otherwise, put it at the very end of RAM.
*/
if (gd->ram_size > 0xfffff000)
bootpg = 0xfff00000;
else
bootpg = gd->ram_size - (1024 * 1024);
if (bootpg >= CONFIG_SYS_MAX_DDR_BAT_SIZE) {
/* We're not covered by the DDR mapping, set up BAT */
write_bat(DBAT7, CONFIG_SYS_SCRATCH_VA | BATU_BL_128K |
BATU_VS | BATU_VP,
bootpg | BATL_PP_RW | BATL_MEMCOHERENCE);
bootpg_va = CONFIG_SYS_SCRATCH_VA;
} else {
bootpg_va = bootpg;
}
memcpy((void *)bootpg_va, (void *)fixup, 4096);
flush_cache(bootpg_va, 4096);
/* remove the temporary BAT mapping */
if (bootpg >= CONFIG_SYS_MAX_DDR_BAT_SIZE)
write_bat(DBAT7, 0, 0);
/* If the physical location of bootpg is not at fff00000, set BPTR */
if (bootpg != 0xfff00000)
out_be32((uint *)(CONFIG_SYS_CCSRBAR + 0x20), 0x80000000 |
(bootpg >> 12));
}
#endif
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