[SeaBIOS] [PATCH 4/6] pci: tweak + comment minimum allocations

[Gerd Hoffmann]

Signed-off-by: Gerd Hoffmann 
---
 src/fw/pciinit.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/fw/pciinit.c b/src/fw/pciinit.c
index 1fd02f0..23fbd2f 100644
--- a/src/fw/pciinit.c
+++ b/src/fw/pciinit.c
@@ -20,9 +20,9 @@
 #include "util.h" // pci_setup
 #include "x86.h" // outb

-#define PCI_DEVICE_MEM_MIN     0x1000
-#define PCI_BRIDGE_IO_MIN      0x1000
-#define PCI_BRIDGE_MEM_MIN   0x100000
+#define PCI_DEVICE_MEM_MIN    (1<<12)  // 4k == page size
+#define PCI_BRIDGE_MEM_MIN    (1<<21)  // 2M == hugepage size
+#define PCI_BRIDGE_IO_MIN      0x1000  // mandated by pci bridge spec

enum pci_region_type {
     PCI_REGION_TYPE_IO,