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| author | Arnab Basu <arnab.basu@freescale.com> | 2015-01-06 13:18:41 -0800 |
|---|---|---|
| committer | York Sun <yorksun@freescale.com> | 2015-02-24 13:08:28 -0800 |
| commit | 60385d94e56513b50b87724fb9a3878ee5086da9 (patch) | |
| tree | ed3cfc5ed8010de1ddafbf286d85bf535beda228 /arch/arm/cpu/armv8 | |
| parent | 6c747f4ad4eef87152f8d6de2169efe0a6a7a57f (diff) | |
| download | u-boot-imx-60385d94e56513b50b87724fb9a3878ee5086da9.zip u-boot-imx-60385d94e56513b50b87724fb9a3878ee5086da9.tar.gz u-boot-imx-60385d94e56513b50b87724fb9a3878ee5086da9.tar.bz2 | |
ARMv8/fsl-lsch3: Patch cpu node properties in DT for online cores
U-Boot should only add "enable-method" and "cpu-release-address"
properties to the "cpu" node of the online cores.
Signed-off-by: Arnab Basu <arnab.basu@freescale.com>
Signed-off-by: York Sun <yorksun@freescale.com>
Diffstat (limited to 'arch/arm/cpu/armv8')
| -rw-r--r-- | arch/arm/cpu/armv8/fsl-lsch3/fdt.c | 23 | ||||
| -rw-r--r-- | arch/arm/cpu/armv8/fsl-lsch3/mp.c | 8 | ||||
| -rw-r--r-- | arch/arm/cpu/armv8/fsl-lsch3/mp.h | 1 |
3 files changed, 23 insertions, 9 deletions
diff --git a/arch/arm/cpu/armv8/fsl-lsch3/fdt.c b/arch/arm/cpu/armv8/fsl-lsch3/fdt.c index e392eb9..2287e26 100644 --- a/arch/arm/cpu/armv8/fsl-lsch3/fdt.c +++ b/arch/arm/cpu/armv8/fsl-lsch3/fdt.c @@ -16,7 +16,7 @@ void ft_fixup_cpu(void *blob) __maybe_unused u64 spin_tbl_addr = (u64)get_spin_tbl_addr(); fdt32_t *reg; int addr_cells; - u64 val; + u64 val, core_id; size_t *boot_code_size = &(__secondary_boot_code_size); off = fdt_path_offset(blob, "/cpus"); @@ -29,15 +29,20 @@ void ft_fixup_cpu(void *blob) off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4); while (off != -FDT_ERR_NOTFOUND) { reg = (fdt32_t *)fdt_getprop(blob, off, "reg", 0); + core_id = of_read_number(reg, addr_cells); if (reg) { - val = spin_tbl_addr; - val += id_to_core(of_read_number(reg, addr_cells)) - * SPIN_TABLE_ELEM_SIZE; - val = cpu_to_fdt64(val); - fdt_setprop_string(blob, off, "enable-method", - "spin-table"); - fdt_setprop(blob, off, "cpu-release-addr", - &val, sizeof(val)); + if (core_id == 0 || (is_core_online(core_id))) { + val = spin_tbl_addr; + val += id_to_core(core_id) * + SPIN_TABLE_ELEM_SIZE; + val = cpu_to_fdt64(val); + fdt_setprop_string(blob, off, "enable-method", + "spin-table"); + fdt_setprop(blob, off, "cpu-release-addr", + &val, sizeof(val)); + } else { + debug("skipping offline core\n"); + } } else { puts("Warning: found cpu node without reg property\n"); } diff --git a/arch/arm/cpu/armv8/fsl-lsch3/mp.c b/arch/arm/cpu/armv8/fsl-lsch3/mp.c index 94998bf..ce9c0c1 100644 --- a/arch/arm/cpu/armv8/fsl-lsch3/mp.c +++ b/arch/arm/cpu/armv8/fsl-lsch3/mp.c @@ -83,6 +83,14 @@ int is_core_valid(unsigned int core) return !!((1 << core) & cpu_mask()); } +int is_core_online(u64 cpu_id) +{ + u64 *table; + int pos = id_to_core(cpu_id); + table = (u64 *)get_spin_tbl_addr() + pos * WORDS_PER_SPIN_TABLE_ENTRY; + return table[SPIN_TABLE_ELEM_STATUS_IDX] == 1; +} + int cpu_reset(int nr) { puts("Feature is not implemented.\n"); diff --git a/arch/arm/cpu/armv8/fsl-lsch3/mp.h b/arch/arm/cpu/armv8/fsl-lsch3/mp.h index 06ac0bc..66144d6 100644 --- a/arch/arm/cpu/armv8/fsl-lsch3/mp.h +++ b/arch/arm/cpu/armv8/fsl-lsch3/mp.h @@ -32,5 +32,6 @@ int fsl_lsch3_wake_seconday_cores(void); void *get_spin_tbl_addr(void); phys_addr_t determine_mp_bootpg(void); void secondary_boot_func(void); +int is_core_online(u64 cpu_id); #endif #endif /* _FSL_CH3_MP_H */ |