From: Keir Fraser <keir.fraser@citrix.com>
Date: Mon, 24 Nov 2008 11:17:44 +0000 (+0000)
Subject: hvmloader: Relocate the etherboot ROM to be near the end of VGA
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~14043^2~2
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=66d936fdab1e4da0c2ef6e32e24362a26d1a343a;p=xen.git

hvmloader: Relocate the etherboot ROM to be near the end of VGA
BIOS. Current Xen hard coded VGA ROM at 0xC0000 and etherboot ROM
at 0xD0000. This makes the space in [0xC0000 - 0xDFFFF] to be
fragments, which makes it hard to find enough space to hold another
Option ROM.

Signed-off-by: Shan Haitao <haitao.shan@intel.com>
---

diff --git a/tools/firmware/hvmloader/config.h b/tools/firmware/hvmloader/config.h
index 32011cd5a1..ea0c435ae4 100644
--- a/tools/firmware/hvmloader/config.h
+++ b/tools/firmware/hvmloader/config.h
@@ -23,7 +23,6 @@
 /* Memory map. */
 #define HYPERCALL_PHYSICAL_ADDRESS    0x00080000
 #define VGABIOS_PHYSICAL_ADDRESS      0x000C0000
-#define ETHERBOOT_PHYSICAL_ADDRESS    0x000D0000
 #define SMBIOS_PHYSICAL_ADDRESS       0x000E9000
 #define SMBIOS_MAXIMUM_SIZE           0x00001000
 #define ACPI_PHYSICAL_ADDRESS         0x000EA000
diff --git a/tools/firmware/hvmloader/hvmloader.c b/tools/firmware/hvmloader/hvmloader.c
index 9dff7cc08d..c8c2719a6c 100644
--- a/tools/firmware/hvmloader/hvmloader.c
+++ b/tools/firmware/hvmloader/hvmloader.c
@@ -462,7 +462,7 @@ static uint16_t init_xen_platform_io_base(void)
 int main(void)
 {
     int vgabios_sz = 0, etherboot_sz = 0, rombios_sz, smbios_sz;
-    uint32_t vga_ram = 0;
+    uint32_t etherboot_phys_addr, vga_ram = 0;
     uint16_t xen_pfiob;
 
     printf("HVM Loader\n");
@@ -516,7 +516,10 @@ int main(void)
         printf("VGA RAM at %08x\n", vga_ram);
     }
 
-    etherboot_sz = scan_etherboot_nic((void*)ETHERBOOT_PHYSICAL_ADDRESS);
+    /* Ethernet ROM is placed after VGA ROM, on next 2kB boundary. */
+    etherboot_phys_addr =
+        (VGABIOS_PHYSICAL_ADDRESS + vgabios_sz + 2047) & ~2047;
+    etherboot_sz = scan_etherboot_nic((void *)etherboot_phys_addr);
 
     if ( get_acpi_enabled() )
     {
@@ -533,8 +536,8 @@ int main(void)
                VGABIOS_PHYSICAL_ADDRESS + vgabios_sz - 1);
     if ( etherboot_sz )
         printf(" %05x-%05x: Etherboot ROM\n",
-               ETHERBOOT_PHYSICAL_ADDRESS,
-               ETHERBOOT_PHYSICAL_ADDRESS + etherboot_sz - 1);
+               etherboot_phys_addr,
+               etherboot_phys_addr + etherboot_sz - 1);
     if ( smbios_sz )
         printf(" %05x-%05x: SMBIOS tables\n",
                SMBIOS_PHYSICAL_ADDRESS,