[Qemu-devel] [PATCH] PPC: E500: Calculate loading blob offsets properly

[Alexander Graf <agraf@suse.de>]

We have 3 blobs we need to load when booting the system:

  - kernel
  - initrd
  - dtb

We place them in physical memory in that order. At least we should.
This patch fixes the location calculation up to take any module into
account, fixing the dtb offset along the way.

Reported-by: Stuart Yoder <stuart.yoder@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>

---

v1 -> v2:

  - fix calculation logic for real
---
 hw/ppc/e500.c |   12 ++++++++----
 1 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/hw/ppc/e500.c b/hw/ppc/e500.c
index 3a9e1c7..1861695 100644
--- a/hw/ppc/e500.c
+++ b/hw/ppc/e500.c
@@ -460,7 +460,8 @@ void ppce500_init(PPCE500Params *params)
     target_long kernel_size=0;
     target_ulong dt_base = 0;
     target_ulong initrd_base = 0;
-    target_long initrd_size=0;
+    target_long initrd_size = 0;
+    target_ulong cur_base = 0;
     int i = 0, j, k;
     unsigned int pci_irq_nrs[4] = {1, 2, 3, 4};
     qemu_irq **irqs, *mpic;
@@ -621,12 +622,13 @@ void ppce500_init(PPCE500Params *params)
                     params->kernel_filename);
             exit(1);
         }
+
+        cur_base = loadaddr + kernel_size;
     }
 
     /* Load initrd. */
     if (params->initrd_filename) {
-        initrd_base = (loadaddr + kernel_size + INITRD_LOAD_PAD) &
-            ~INITRD_PAD_MASK;
+        initrd_base = (cur_base + INITRD_LOAD_PAD) & ~INITRD_PAD_MASK;
         initrd_size = load_image_targphys(params->initrd_filename, initrd_base,
                                           ram_size - initrd_base);
 
@@ -635,6 +637,8 @@ void ppce500_init(PPCE500Params *params)
                     params->initrd_filename);
             exit(1);
         }
+
+        cur_base = initrd_base + initrd_size;
     }
 
     /* If we're loading a kernel directly, we must load the device tree too. */
@@ -642,7 +646,7 @@ void ppce500_init(PPCE500Params *params)
         struct boot_info *boot_info;
         int dt_size;
 
-        dt_base = (loadaddr + kernel_size + DTC_LOAD_PAD) & ~DTC_PAD_MASK;
+        dt_base = (cur_base + DTC_LOAD_PAD) & ~DTC_PAD_MASK;
         dt_size = ppce500_load_device_tree(env, params, dt_base, initrd_base,
                                            initrd_size);
         if (dt_size < 0) {
-- 
1.6.0.2