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authorAlison Wang <b18965@freescale.com>2016-11-10 10:49:04 +0800
committerYork Sun <york.sun@nxp.com>2016-11-22 11:40:24 -0800
commite2c18e40b111470fbe1aca47b58570099695f10a (patch)
tree8dfe3aa38868f70e14ba5d817f4a158e5636d74c /arch/arm/cpu/armv8
parentec6617c39741adc6c54952564579e32c3c09c66f (diff)
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armv8: fsl-layerscape: SMP support for loading 32-bit OS
Spin-table method is used for secondary cores to load 32-bit OS. The architecture information will be got through checking FIT image and saved in the os_arch element of spin-table, then the secondary cores will check os_arch and jump to 32-bit OS or 64-bit OS automatically. Signed-off-by: Alison Wang <alison.wang@nxp.com> Signed-off-by: Chenhui Zhao <chenhui.zhao@nxp.com> Reviewed-by: York Sun <york.sun@nxp.com>
Diffstat (limited to 'arch/arm/cpu/armv8')
-rw-r--r--arch/arm/cpu/armv8/fsl-layerscape/mp.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/mp.c b/arch/arm/cpu/armv8/fsl-layerscape/mp.c
index 97c6269..80fe1ad 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/mp.c
+++ b/arch/arm/cpu/armv8/fsl-layerscape/mp.c
@@ -24,6 +24,16 @@ phys_addr_t determine_mp_bootpg(void)
return (phys_addr_t)&secondary_boot_code;
}
+void update_os_arch_secondary_cores(uint8_t os_arch)
+{
+ u64 *table = get_spin_tbl_addr();
+ int i;
+
+ for (i = 1; i < CONFIG_MAX_CPUS; i++)
+ table[i * WORDS_PER_SPIN_TABLE_ENTRY +
+ SPIN_TABLE_ELEM_OS_ARCH_IDX] = os_arch;
+}
+
#ifdef CONFIG_FSL_LSCH3
void wake_secondary_core_n(int cluster, int core, int cluster_cores)
{