[romprefix] Provide indication of successful call to install_prealloc

The existing "iPXE starting execution" message indicates that the BEV
(or INT19) was invoked, but gives no indication on whether or not the
iPXE source was successfully retrieved (e.g. from PMM).  Split the
"starting execution message" into "starting execution...ok"; the "ok"
indicates that the main iPXE body was successfully decompressed and
relocated.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

diff --git a/src/arch/i386/prefix/romprefix.S b/src/arch/i386/prefix/romprefix.S
index 3fec7327e226f52111556a6006fe5381f6d1c160..6c9b4b0f4652177dd3b6997fb5afc7f0bfb2eb2a 100644 (file)
--- a/src/arch/i386/prefix/romprefix.S
+++ b/src/arch/i386/prefix/romprefix.S
@@ -593,7 +593,7 @@ exec:       /* Set %ds = %cs */
        movw    $prodstr, %si
        xorw    %di, %di
        call    print_message
-       movw    $exec_message, %si
+       movw    $exec_message_pre_install, %si
        call    print_message
 
        /* Store magic word on BIOS stack and remember BIOS %ss:sp */
@@ -612,6 +612,11 @@ exec:      /* Set %ds = %cs */
        call    alloc_basemem
        call    install_prealloc
 
+       /* Print message indicating successful installation */
+       movw    $exec_message_post_install, %si
+       xorw    %di, %di
+       call    print_message
+
        /* Set up real-mode stack */
        movw    %bx, %ss
        movw    $_estack16, %sp
@@ -644,9 +649,12 @@ exec:      /* Set %ds = %cs */
        int     $0x18
        .previous
 
-exec_message:
-       .asciz  " starting execution\n"
-       .size exec_message, . - exec_message
+exec_message_pre_install:
+       .asciz  " starting execution..."
+       .size exec_message_pre_install, . - exec_message_pre_install
+exec_message_post_install:
+       .asciz  "ok\n"
+       .size exec_message_post_install, . - exec_message_post_install
 
 /* Wait for key press specified by %bl (masked by %bh)
  *