From 8b93059eccedc528443c06eb86c58bd320dca203 Mon Sep 17 00:00:00 2001 From: "Ronald G. Minnich" Date: Tue, 5 Jun 2012 14:41:27 -0700 Subject: Pass the CPU index as a parameter to startup. This addition is in support of future multicore support in coreboot. It also will allow us to remove some asssembly code. The CPU "index" -- i.e., its order in the sequence in which cores are brought up, NOT its APIC id -- is passed into the secondary start. We modify the function to specify regparm(0). We also take this opportunity to do some cleanup: indexes become unsigned ints, not unsigned longs, for example. Build and boot on a multicore system, with pcserial enabled. Capture the output. Observe that the messages Initializing CPU #0 Initializing CPU #1 Initializing CPU #2 Initializing CPU #3 appear exactly as they do prior to this change. Change-Id: I5854d8d957c414f75fdd63fb017d2249330f955d Signed-off-by: Ronald G. Minnich Reviewed-on: http://review.coreboot.org/1820 Reviewed-by: Stefan Reinauer Tested-by: build bot (Jenkins) --- src/arch/x86/include/arch/cpu.h | 2 +- src/arch/x86/lib/cpu.c | 6 +++--- 2 files changed, 4 insertions(+), 4 deletions(-) (limited to 'src/arch/x86') diff --git a/src/arch/x86/include/arch/cpu.h b/src/arch/x86/include/arch/cpu.h index 0dc92fba9e..aa0412fc49 100644 --- a/src/arch/x86/include/arch/cpu.h +++ b/src/arch/x86/include/arch/cpu.h @@ -160,7 +160,7 @@ struct cpu_driver *find_cpu_driver(struct device *cpu); struct cpu_info { device_t cpu; - unsigned long index; + unsigned int index; }; static inline struct cpu_info *cpu_info(void) diff --git a/src/arch/x86/lib/cpu.c b/src/arch/x86/lib/cpu.c index 98ede068ef..be8e38da13 100644 --- a/src/arch/x86/lib/cpu.c +++ b/src/arch/x86/lib/cpu.c @@ -234,7 +234,7 @@ static void set_cpu_ops(struct device *cpu) cpu->ops = driver ? driver->ops : NULL; } -void cpu_initialize(void) +void cpu_initialize(unsigned int index) { /* Because we busy wait at the printk spinlock. * It is important to keep the number of printed messages @@ -247,7 +247,7 @@ void cpu_initialize(void) info = cpu_info(); - printk(BIOS_INFO, "Initializing CPU #%ld\n", info->index); + printk(BIOS_INFO, "Initializing CPU #%d\n", index); cpu = info->cpu; if (!cpu) { @@ -284,7 +284,7 @@ void cpu_initialize(void) cpu->ops->init(cpu); } - printk(BIOS_INFO, "CPU #%ld initialized\n", info->index); + printk(BIOS_INFO, "CPU #%d initialized\n", index); return; } -- cgit v1.2.3