ping --- Christian Gmeiner, MSc
2012/9/17 Christian Gmeiner christian.gmeiner@gmail.com:
everything works - feel free to commit :)
Will rework my patches (VESA support and Flat Panel Support) and hope to send them during this week. Finally I will look into EDID.
Christian Gmeiner, MSc
2012/9/16 Christian Gmeiner christian.gmeiner@gmail.com:
looks... fine... will comile it tomorrow in the office
Christian Gmeiner, MSc
2012/9/16 Kevin O'Connor kevin@koconnor.net:
Hi Christian,
I just noticed that a recent Geode patch introduced global variables that are accessed without GET_GLOBAL/SET_VGA macros. This will cause random memory corruption. Please see the patch below.
-Kevin
From ef7f73fa23e42953932920d39f729df82605b2a8 Mon Sep 17 00:00:00 2001 From: Kevin O'Connor kevin@koconnor.net Date: Sun, 16 Sep 2012 13:24:30 -0400 Subject: [PATCH] geodevga: Access global variables using GET_GLOBAL/SET_VGA macros. To: seabios@seabios.org
The vgabios runs in 16bit mode so all global variables must be accessed via macros.
Signed-off-by: Kevin O'Connor kevin@koconnor.net
vgasrc/geodevga.c | 76 ++++++++++++++++++++++++++++--------------------------- 1 file changed, 39 insertions(+), 37 deletions(-)
diff --git a/vgasrc/geodevga.c b/vgasrc/geodevga.c index ed41be6..cf1382d 100644 --- a/vgasrc/geodevga.c +++ b/vgasrc/geodevga.c @@ -86,55 +86,58 @@ static void geode_mem_mask(u32 addr, u32 off, u32 or) ); }
-/****************************************************************
- Helper functions
- ****************************************************************/
-struct geode {
- u32 fb;
- u32 dc;
- u32 vp;
-}; -struct geode geode VAR16; +static u32 GeodeFB VAR16; +static u32 GeodeDC VAR16; +static u32 GeodeVP VAR16;
static u32 geode_dc_read(int reg) {
- u32 val = geode_mem_read(geode.dc + reg);
- dprintf(4, "%s(0x%08x) = 0x%08x\n", __func__, geode.dc + reg, val);
- u32 val = geode_mem_read(GET_GLOBAL(GeodeDC) + reg);
- dprintf(4, "%s(0x%08x) = 0x%08x\n"
, __func__, GET_GLOBAL(GeodeDC) + reg, val);}
static void geode_dc_write(int reg, u32 val) {
- dprintf(4, "%s(0x%08x, 0x%08x)\n", __func__, geode.dc + reg, val);
- geode_mem_mask(geode.dc + reg, ~0, val);
- dprintf(4, "%s(0x%08x, 0x%08x)\n"
, __func__, GET_GLOBAL(GeodeDC) + reg, val);- geode_mem_mask(GET_GLOBAL(GeodeDC) + reg, ~0, val);
}
static void geode_dc_mask(int reg, u32 off, u32 on) {
- dprintf(4, "%s(0x%08x, 0x%08x, 0x%08x)\n", __func__, geode.dc + reg, off, on);
- geode_mem_mask(geode.dc + reg, off, on);
- dprintf(4, "%s(0x%08x, 0x%08x, 0x%08x)\n"
, __func__, GET_GLOBAL(GeodeDC) + reg, off, on);- geode_mem_mask(GET_GLOBAL(GeodeDC) + reg, off, on);
}
static u32 geode_vp_read(int reg) {
- u32 val = geode_mem_read(geode.vp + reg);
- dprintf(4, "%s(0x%08x) = 0x%08x\n", __func__, geode.vp + reg, val);
- u32 val = geode_mem_read(GET_GLOBAL(GeodeVP) + reg);
- dprintf(4, "%s(0x%08x) = 0x%08x\n"
, __func__, GET_GLOBAL(GeodeVP) + reg, val);}
static void geode_vp_write(int reg, u32 val) {
- dprintf(4, "%s(0x%08x, 0x%08x)\n", __func__, geode.vp + reg, val);
- geode_mem_mask(geode.vp + reg, ~0, val);
- dprintf(4, "%s(0x%08x, 0x%08x)\n"
, __func__, GET_GLOBAL(GeodeVP) + reg, val);- geode_mem_mask(GET_GLOBAL(GeodeVP) + reg, ~0, val);
}
static void geode_vp_mask(int reg, u32 off, u32 on) {
- dprintf(4, "%s(0x%08x, 0x%08x, 0x%08x)\n", __func__, geode.vp + reg, off, on);
- geode_mem_mask(geode.vp + reg, off, on);
- dprintf(4, "%s(0x%08x, 0x%08x, 0x%08x)\n"
, __func__, GET_GLOBAL(GeodeVP) + reg, off, on);- geode_mem_mask(GET_GLOBAL(GeodeVP) + reg, off, on);
}
+/****************************************************************
- Helper functions
- ****************************************************************/
static int legacyio_check(void) { int ret=0; @@ -199,10 +202,9 @@ static void dc_setup(void) geode_dc_write(DC_CURS_ST_OFFSET, 0x0);
/* read fb-bar from pci, then point dc to the fb base */
- u32 dc_fb = geode_dc_read(DC_GLIU0_MEM_OFFSET);
- if (geode.fb != dc_fb) {
geode_dc_write(DC_GLIU0_MEM_OFFSET, geode.fb);- }
u32 fb = GET_GLOBAL(GeodeFB);
if (geode_dc_read(DC_GLIU0_MEM_OFFSET) != fb)
geode_dc_write(DC_GLIU0_MEM_OFFSET, fb);geode_dc_mask(DC_DISPLAY_CFG, ~DC_CFG_MSK, DC_GDEN|DC_TRUP); geode_dc_write(DC_GENERAL_CFG, DC_VGAE);
@@ -210,10 +212,10 @@ static void dc_setup(void) geode_dc_write(DC_UNLOCK, DC_LOCK_LOCK);
u32 fb_size = framebuffer_size(); // in byte
- dprintf(1, "%d KB of video memory at 0x%08x\n", fb_size / 1024, geode.fb);
dprintf(1, "%d KB of video memory at 0x%08x\n", fb_size / 1024, fb);
/* update VBE variables */
- SET_VGA(VBE_framebuffer, geode.fb);
- SET_VGA(VBE_framebuffer, fb); SET_VGA(VBE_total_memory, fb_size / 1024 / 64); // number of 64K blocks
}
@@ -335,16 +337,16 @@ int geodevga_init(void) if (GET_GLOBAL(VgaBDF) < 0) // Device should be at 00:01.1 SET_VGA(VgaBDF, pci_to_bdf(0, 1, 1));
- // setup geode struct which is used for register access
- geode.fb = pci_config_readl(GET_GLOBAL(VgaBDF), PCI_BASE_ADDRESS_0);
- geode.dc = pci_config_readl(GET_GLOBAL(VgaBDF), PCI_BASE_ADDRESS_2);
- geode.vp = pci_config_readl(GET_GLOBAL(VgaBDF), PCI_BASE_ADDRESS_3);
- dprintf(1, "fb addr: 0x%08x\n", geode.fb);
- dprintf(1, "dc addr: 0x%08x\n", geode.dc);
- dprintf(1, "vp addr: 0x%08x\n", geode.vp);
- SET_VGA(GeodeFB, pci_config_readl(GET_GLOBAL(VgaBDF), PCI_BASE_ADDRESS_0));
- SET_VGA(GeodeDC, pci_config_readl(GET_GLOBAL(VgaBDF), PCI_BASE_ADDRESS_2));
- SET_VGA(GeodeVP, pci_config_readl(GET_GLOBAL(VgaBDF), PCI_BASE_ADDRESS_3));
- dprintf(1, "fb addr: 0x%08x\n", GET_GLOBAL(GeodeFB));
- dprintf(1, "dc addr: 0x%08x\n", GET_GLOBAL(GeodeDC));
- dprintf(1, "vp addr: 0x%08x\n", GET_GLOBAL(GeodeVP));
- vp_setup(); dc_setup();
-- 1.7.11.4