[PATCH 3/5] x86: cpu: Skip init code when chain loading

[Simon Glass]

When U-Boot is not the first-stage bootloader the interrupt and cache init
must be skipped, as well as init for various peripherals. Update the code
to add checks for this.

Signed-off-by: Simon Glass <s...@chromium.org>
---

 arch/x86/cpu/cpu.c            | 4 +++-
 arch/x86/cpu/i386/interrupt.c | 3 +++
 arch/x86/lib/init_helpers.c   | 3 +++
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/arch/x86/cpu/cpu.c b/arch/x86/cpu/cpu.c
index d626e38fd1..d82305303a 100644
--- a/arch/x86/cpu/cpu.c
+++ b/arch/x86/cpu/cpu.c
@@ -238,8 +238,10 @@ int cpu_init_r(void)
        struct udevice *dev;
        int ret;
 
-       if (!ll_boot_init())
+       if (!ll_boot_init()) {
+               uclass_first_device(UCLASS_PCI, &dev);
                return 0;
+       }
 
        ret = x86_init_cpus();
        if (ret)
diff --git a/arch/x86/cpu/i386/interrupt.c b/arch/x86/cpu/i386/interrupt.c
index 78aa51a3ea..c33ca165d8 100644
--- a/arch/x86/cpu/i386/interrupt.c
+++ b/arch/x86/cpu/i386/interrupt.c
@@ -261,6 +261,9 @@ int interrupt_init(void)
        struct udevice *dev;
        int ret;
 
+       if (!ll_boot_init())
+               return 0;
+
        /* Try to set up the interrupt router, but don't require one */
        ret = uclass_first_device_err(UCLASS_IRQ, &dev);
        if (ret && ret != -ENODEV)
diff --git a/arch/x86/lib/init_helpers.c b/arch/x86/lib/init_helpers.c
index 5bb55e256f..d906b528b3 100644
--- a/arch/x86/lib/init_helpers.c
+++ b/arch/x86/lib/init_helpers.c
@@ -30,6 +30,9 @@ int init_cache_f_r(void)
                        return ret;
        }
 
+       if (!ll_boot_init())
+               return 0;
+
        /* Initialise the CPU cache(s) */
        return init_cache();
 }
-- 
2.24.1.735.g03f4e72817-goog