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Cirrus Logic: Implement proper VLB addressing, closes #5337.

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This commit is contained in:
OBattler
2025-04-22 21:10:06 +02:00
parent b15f25ffa4
commit 592e5c6a79
1 changed files with 89 additions and 6 deletions
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95
src/video/vid_cl54xx.c
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@@ -260,6 +260,8 @@ typedef struct gd54xx_t {
uint8_t pos_regs[8];
uint32_t vlb_lfb_base;
uint32_t lfb_base;
uint32_t vgablt_base;
@@ -1750,7 +1752,8 @@ gd543x_recalc_mapping(gd54xx_t *gd54xx)
} else
mem_mapping_disable(&gd54xx->mmio_mapping);
} else {
if ((svga->crtc[0x27] <= CIRRUS_ID_CLGD5429) || (!gd54xx->pci && !gd54xx->vlb)) {
if ((svga->crtc[0x27] <= CIRRUS_ID_CLGD5429) ||
(!gd54xx->pci && !gd54xx->vlb)) {
if (svga->gdcreg[0x0b] & CIRRUS_BANKING_GRANULARITY_16K) {
base = (svga->seqregs[0x07] & 0xf0) << 16;
size = 1 * 1024 * 1024;
@@ -1770,7 +1773,10 @@ gd543x_recalc_mapping(gd54xx_t *gd54xx)
else
size = 4 * 1024 * 1024;
} else { /*VLB/ISA/MCA*/
base = 128 * 1024 * 1024;
if (gd54xx->vlb_lfb_base != 0x00000000)
base = gd54xx->vlb_lfb_base;
else
base = 128 * 1024 * 1024;
if (svga->crtc[0x27] >= CIRRUS_ID_CLGD5436)
size = 16 * 1024 * 1024;
else
@@ -4224,6 +4230,12 @@ gd54xx_init(const device_t *info)
gd54xx->id = id;
if (gd54xx->vlb && ((gd54xx->id == CIRRUS_ID_CLGD5430) ||
(gd54xx->id == CIRRUS_ID_CLGD5434) ||
(gd54xx->id == CIRRUS_ID_CLGD5434_4) ||
(gd54xx->id == CIRRUS_ID_CLGD5440)))
gd54xx->vlb_lfb_base = device_get_config_int("lfb_base") << 20;
switch (id) {
case CIRRUS_ID_CLGD5401:
romfn = BIOS_GD5401_PATH;
@@ -4777,6 +4789,41 @@ static const device_config_t gd5429_config[] = {
{ .name = "", .description = "", .type = CONFIG_END }
};
static const device_config_t gd5430_vlb_config[] = {
{
.name = "memory",
.description = "Memory size",
.type = CONFIG_SELECTION,
.default_string = NULL,
.default_int = 2,
.file_filter = NULL,
.spinner = { 0 },
.selection = {
{ .description = "1 MB", .value = 1 },
{ .description = "2 MB", .value = 2 },
{ .description = "" }
},
.bios = { { 0 } }
},
{
.name = "lfb_base",
.description = "Linear framebuffer base",
.type = CONFIG_SELECTION,
.default_string = NULL,
.default_int = 2,
.file_filter = NULL,
.spinner = { 0 },
.selection = {
{ .description = "32 MB", .value = 32 },
{ .description = "64 MB", .value = 64 },
{ .description = "2048 MB", .value = 2048 },
{ .description = "" }
},
.bios = { { 0 } }
},
{ .name = "", .description = "", .type = CONFIG_END }
};
static const device_config_t gd5440_onboard_config[] = {
{
.name = "memory",
@@ -4816,6 +4863,42 @@ static const device_config_t gd5434_config[] = {
{ .name = "", .description = "", .type = CONFIG_END }
};
static const device_config_t gd5434_vlb_config[] = {
{
.name = "memory",
.description = "Memory size",
.type = CONFIG_SELECTION,
.default_string = NULL,
.default_int = 4,
.file_filter = NULL,
.spinner = { 0 },
.selection = {
{ .description = "1 MB", .value = 1 },
{ .description = "2 MB", .value = 2 },
{ .description = "4 MB", .value = 4 },
{ .description = "" }
},
.bios = { { 0 } }
},
{
.name = "lfb_base",
.description = "Linear framebuffer base",
.type = CONFIG_SELECTION,
.default_string = NULL,
.default_int = 2,
.file_filter = NULL,
.spinner = { 0 },
.selection = {
{ .description = "32 MB", .value = 32 },
{ .description = "64 MB", .value = 64 },
{ .description = "2048 MB", .value = 2048 },
{ .description = "" }
},
.bios = { { 0 } }
},
{ .name = "", .description = "", .type = CONFIG_END }
};
static const device_config_t gd5434_onboard_config[] = {
{
.name = "memory",
@@ -5150,7 +5233,7 @@ const device_t gd5430_diamond_speedstar_pro_se_a8_vlb_device = {
.available = gd5430_diamond_a8_available,
.speed_changed = gd54xx_speed_changed,
.force_redraw = gd54xx_force_redraw,
.config = gd5429_config
.config = gd5430_vlb_config
};
const device_t gd5430_vlb_device = {
@@ -5164,7 +5247,7 @@ const device_t gd5430_vlb_device = {
.available = gd5430_orchid_vlb_available,
.speed_changed = gd54xx_speed_changed,
.force_redraw = gd54xx_force_redraw,
.config = gd5429_config
.config = gd5430_vlb_config
};
const device_t gd5430_onboard_vlb_device = {
@@ -5178,7 +5261,7 @@ const device_t gd5430_onboard_vlb_device = {
.available = NULL,
.speed_changed = gd54xx_speed_changed,
.force_redraw = gd54xx_force_redraw,
.config = gd5429_config
.config = gd5430_vlb_config
};
const device_t gd5430_pci_device = {
@@ -5263,7 +5346,7 @@ const device_t gd5434_vlb_device = {
.available = gd5430_orchid_vlb_available,
.speed_changed = gd54xx_speed_changed,
.force_redraw = gd54xx_force_redraw,
.config = gd5434_config
.config = gd5434_vlb_config
};
const device_t gd5434_pci_device = {