Commit 7aff0c05 authored by Kumar Gala's avatar Kumar Gala Committed by Andrew Fleming-AFLEMING
Browse files

85xx: Added support for multicore boot mechanism



Added the cpu command that provides a generic mechanism to get status,
reset, and release secondary cores in multicore processors.

Added support for using the ePAPR defined spin-table mechanism on 85xx.

Signed-off-by: default avatarKumar Gala <galak@kernel.crashing.org>
Signed-off-by: default avatarAndy Fleming <afleming@freescale.com>
parent ec2b74ff
......@@ -77,6 +77,55 @@ void ft_fixup_cpu(void *blob, u64 memory_limit)
}
#endif
#ifdef CONFIG_MP
#include "mp.h"
DECLARE_GLOBAL_DATA_PTR;
void ft_fixup_cpu(void *blob, u64 memory_limit)
{
int off;
ulong spin_tbl_addr = get_spin_addr();
u32 bootpg, id = get_my_id();
/* if we have 4G or more of memory, put the boot page at 4Gb-4k */
if ((u64)gd->ram_size > 0xfffff000)
bootpg = 0xfffff000;
else
bootpg = gd->ram_size - 4096;
off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4);
while (off != -FDT_ERR_NOTFOUND) {
u32 *reg = (u32 *)fdt_getprop(blob, off, "reg", 0);
if (reg) {
if (*reg == id) {
fdt_setprop_string(blob, off, "status", "okay");
} else {
u32 val = *reg * 24 + spin_tbl_addr;
val = cpu_to_fdt32(val);
fdt_setprop_string(blob, off, "status",
"disabled");
fdt_setprop_string(blob, off, "enable-method",
"spin-table");
fdt_setprop(blob, off, "cpu-release-addr",
&val, sizeof(val));
}
} else {
printf ("cpu NULL\n");
}
off = fdt_node_offset_by_prop_value(blob, off,
"device_type", "cpu", 4);
}
/* Reserve the boot page so OSes dont use it */
if ((u64)bootpg < memory_limit) {
off = fdt_add_mem_rsv(blob, bootpg, (u64)4096);
if (off < 0)
printf("%s: %s\n", __FUNCTION__, fdt_strerror(off));
}
}
#endif
void ft_cpu_setup(void *blob, bd_t *bd)
{
#if defined(CONFIG_HAS_ETH0) || defined(CONFIG_HAS_ETH1) ||\
......
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