diff options
| author | Simon Glass <sjg@chromium.org> | 2020-07-17 08:48:13 -0600 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2020-07-20 09:46:44 +0800 |
| commit | 77a5e2d3bc61f65336924d59a08ebe233b46a545 (patch) | |
| tree | ff41f0d9e6b634a30b1014d959b7db935f7889d3 /arch/x86 | |
| parent | 36c184bd0a6b73ae3a3ca096a7d04e45c5301e14 (diff) | |
x86: mp_init: Set up the CPU numbers at the start
At present each CPU is given a number when it starts itself up. While this
saves a tiny amount of time by doing the device-tree read in parallel, it
is confusing that the numbering happens on the fly.
Move this code into mp_init() and do it at the start.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/cpu/mp_init.c | 21 |
1 files changed, 9 insertions, 12 deletions
diff --git a/arch/x86/cpu/mp_init.c b/arch/x86/cpu/mp_init.c index df43f71572..6f6de49df0 100644 --- a/arch/x86/cpu/mp_init.c +++ b/arch/x86/cpu/mp_init.c @@ -444,12 +444,6 @@ static int mp_init_cpu(struct udevice *cpu, void *unused) { struct cpu_platdata *plat = dev_get_parent_platdata(cpu); - /* - * Multiple APs are brought up simultaneously and they may get the same - * seq num in the uclass_resolve_seq() during device_probe(). To avoid - * this, set req_seq to the reg number in the device tree in advance. - */ - cpu->req_seq = dev_read_u32_default(cpu, "reg", -1); plat->ucode_version = microcode_read_rev(); plat->device_id = gd->arch.x86_device; @@ -465,13 +459,8 @@ int mp_init(void) int num_aps, num_cpus; atomic_t *ap_count; struct udevice *cpu; - int ret; - - /* This will cause the CPUs devices to be bound */ struct uclass *uc; - ret = uclass_get(UCLASS_CPU, &uc); - if (ret) - return ret; + int ret; if (IS_ENABLED(CONFIG_QFW)) { ret = qemu_cpu_fixup(); @@ -479,6 +468,14 @@ int mp_init(void) return ret; } + /* + * Multiple APs are brought up simultaneously and they may get the same + * seq num in the uclass_resolve_seq() during device_probe(). To avoid + * this, set req_seq to the reg number in the device tree in advance. + */ + uclass_id_foreach_dev(UCLASS_CPU, cpu, uc) + cpu->req_seq = dev_read_u32_default(cpu, "reg", -1); + ret = init_bsp(&cpu); if (ret) { debug("Cannot init boot CPU: err=%d\n", ret); |