Rename rom_get_top() to rom_get_max().

Rename rom_get_top and try to make the difference between it and
rom_get_last more clear.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

4 files changed, 8 insertions, 8 deletions

diff --git a/src/optionroms.c b/src/optionroms.c
index 03c5de0..caa2151 100644
--- a/src/optionroms.c
+++ b/src/optionroms.c
@@ -354,7 +354,7 @@ optionrom_setup(void)
     if (CONFIG_OPTIONROMS_DEPLOYED) {
         // Option roms are already deployed on the system.
         u32 pos = post_vga;
-        while (pos < rom_get_top()) {
+        while (pos < rom_get_max()) {
             int ret = init_optionrom((void*)pos, 0, 0);
             if (ret)
                 pos += OPTION_ROM_ALIGN;
@@ -436,7 +436,7 @@ vgarom_setup(void)
         init_optionrom((void*)BUILD_ROM_START, 0, 1);
     } else {
         // Clear option rom memory
-        memset((void*)BUILD_ROM_START, 0, rom_get_top() - BUILD_ROM_START);
+        memset((void*)BUILD_ROM_START, 0, rom_get_max() - BUILD_ROM_START);
 
         // Find and deploy PCI VGA rom.
         struct pci_device *pci;
diff --git a/src/pmm.c b/src/pmm.c
index a7d0608..b003dd1 100644
--- a/src/pmm.c
+++ b/src/pmm.c
@@ -170,15 +170,15 @@ static struct allocinfo_s *RomBase;
 
 #define OPROM_HEADER_RESERVE 16
 
-// Return the memory position up to which roms may be located.
+// Return the maximum memory position option roms may use.
 u32
-rom_get_top(void)
+rom_get_max(void)
 {
     return ALIGN_DOWN((u32)RomBase->allocend - OPROM_HEADER_RESERVE
                       , OPTION_ROM_ALIGN);
 }
 
-// Return the end of the last deployed rom.
+// Return the end of the last deployed option rom.
 u32
 rom_get_last(void)
 {
@@ -318,7 +318,7 @@ malloc_prepboot(void)
     dprintf(3, "malloc finalize\n");
 
     // Place an optionrom signature around used low mem area.
-    u32 base = rom_get_top();
+    u32 base = rom_get_max();
     struct rom_header *dummyrom = (void*)base;
     dummyrom->signature = OPTION_ROM_SIGNATURE;
     int size = (BUILD_BIOS_ADDR - base) / 512;
diff --git a/src/shadow.c b/src/shadow.c
index c9e8165..0aac60b 100644
--- a/src/shadow.c
+++ b/src/shadow.c
@@ -80,7 +80,7 @@ make_bios_readonly_intel(u16 bdf, u32 pam0)
     wbinvd();
 
     // Write protect roms from 0xc0000-0xf0000
-    u32 romend = rom_get_last(), romtop = rom_get_top();
+    u32 romend = rom_get_last(), romtop = rom_get_max();
     int i;
     for (i=0; i<6; i++) {
         u32 mem = BUILD_ROM_START + i * 32*1024;
diff --git a/src/util.h b/src/util.h
index 8875d95..5729a2f 100644
--- a/src/util.h
+++ b/src/util.h
@@ -364,7 +364,7 @@ void pnp_init(void);
 
 // pmm.c
 extern struct zone_s ZoneLow, ZoneHigh, ZoneFSeg, ZoneTmpLow, ZoneTmpHigh;
-u32 rom_get_top(void);
+u32 rom_get_max(void);
 u32 rom_get_last(void);
 struct rom_header *rom_reserve(u32 size);
 int rom_confirm(u32 size);