fdt: Implement weak arch_fixup_fdt()

[people/ms/u-boot.git] / arch / x86 / lib / bootm.c

diff --git a/arch/x86/lib/bootm.c b/arch/x86/lib/bootm.c
index 86030cf52aab1c3994d805d47d16c17e27178f05..8e76ba35aea53ad5655e9e32daae842210cc316e 100644 (file)
--- a/arch/x86/lib/bootm.c
+++ b/arch/x86/lib/bootm.c
@@ -10,6 +10,8 @@
 
 #include <common.h>
 #include <command.h>
+#include <dm/device.h>
+#include <dm/root.h>
 #include <errno.h>
 #include <fdt_support.h>
 #include <image.h>
@@ -22,13 +24,11 @@
 #include <asm/arch/timestamp.h>
 #endif
 
+DECLARE_GLOBAL_DATA_PTR;
+
 #define COMMAND_LINE_OFFSET 0x9000
 
-/*
- * Implement a weak default function for boards that optionally
- * need to clean up the system before jumping to the kernel.
- */
-__weak void board_final_cleanup(void)
+__weak void board_quiesce_devices(void)
 {
 }
 
@@ -43,7 +43,13 @@ void bootm_announce_and_cleanup(void)
 #ifdef CONFIG_BOOTSTAGE_REPORT
        bootstage_report();
 #endif
-       board_final_cleanup();
+
+       /*
+        * Call remove function of all devices with a removal flag set.
+        * This may be useful for last-stage operations, like cancelling
+        * of DMA operation or releasing device internal buffers.
+        */
+       dm_remove_devices_flags(DM_REMOVE_ACTIVE_ALL);
 }
 
 #if defined(CONFIG_OF_LIBFDT) && !defined(CONFIG_OF_NO_KERNEL)
@@ -153,16 +159,27 @@ int boot_linux_kernel(ulong setup_base, ulong load_address, bool image_64bit)
                        puts("Cannot boot 64-bit kernel on 32-bit machine\n");
                        return -EFAULT;
                }
+               /* At present 64-bit U-Boot does not support booting a
+                * kernel.
+                * TODO(sjg@chromium.org): Support booting both 32-bit and
+                * 64-bit kernels from 64-bit U-Boot.
+                */
+#if !CONFIG_IS_ENABLED(X86_64)
                return cpu_jump_to_64bit(setup_base, load_address);
+#endif
        } else {
                /*
                * Set %ebx, %ebp, and %edi to 0, %esi to point to the
                * boot_params structure, and then jump to the kernel. We
                * assume that %cs is 0x10, 4GB flat, and read/execute, and
                * the data segments are 0x18, 4GB flat, and read/write.
-               * U-boot is setting them up that way for itself in
+               * U-Boot is setting them up that way for itself in
                * arch/i386/cpu/cpu.c.
+               *
+               * Note that we cannot currently boot a kernel while running as
+               * an EFI application. Please use the payload option for that.
                */
+#ifndef CONFIG_EFI_APP
                __asm__ __volatile__ (
                "movl $0, %%ebp\n"
                "cli\n"
@@ -171,6 +188,7 @@ int boot_linux_kernel(ulong setup_base, ulong load_address, bool image_64bit)
                [boot_params] "S"(setup_base),
                "b"(0), "D"(0)
                );
+#endif
        }
 
        /* We can't get to here */