diff options
| author | Alison Wang <b18965@freescale.com> | 2016-11-10 10:49:04 +0800 |
|---|---|---|
| committer | York Sun <york.sun@nxp.com> | 2016-11-22 11:40:24 -0800 |
| commit | e2c18e40b111470fbe1aca47b58570099695f10a (patch) | |
| tree | 8dfe3aa38868f70e14ba5d817f4a158e5636d74c /arch/arm/cpu/armv8 | |
| parent | ec6617c39741adc6c54952564579e32c3c09c66f (diff) | |
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.c | 10 |
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 97c626996f..80fe1ade2e 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) { |