diff options
| -rw-r--r-- | src/northbridge/intel/i945/gma.c | 196 |
1 files changed, 194 insertions, 2 deletions
diff --git a/src/northbridge/intel/i945/gma.c b/src/northbridge/intel/i945/gma.c index c92bfbff1e..2bbde4610a 100644 --- a/src/northbridge/intel/i945/gma.c +++ b/src/northbridge/intel/i945/gma.c @@ -77,7 +77,7 @@ static int gtt_setup(void *mmiobase) return 0; } -static int intel_gma_init(struct northbridge_intel_i945_config *conf, +static int intel_gma_init_lvds(struct northbridge_intel_i945_config *conf, unsigned int pphysbase, unsigned int piobase, void *pmmio, unsigned int pgfx) { @@ -383,6 +383,194 @@ static int intel_gma_init(struct northbridge_intel_i945_config *conf, #endif return 0; } + +static int intel_gma_init_vga(struct northbridge_intel_i945_config *conf, + unsigned int pphysbase, unsigned int piobase, + void *pmmio, unsigned int pgfx) +{ + int i; + u32 hactive, vactive; + u16 reg16; + u32 uma_size; + + printk(BIOS_SPEW, "pmmio %x addrport %x physbase %x\n", + (u32)pmmio, piobase, pphysbase); + + gtt_setup(pmmio); + + /* Disable VGA. */ + write32(pmmio + VGACNTRL, VGA_DISP_DISABLE); + + /* Disable pipes. */ + write32(pmmio + PIPECONF(0), 0); + write32(pmmio + PIPECONF(1), 0); + + write32(pmmio + INSTPM, 0x800); + + vga_gr_write(0x18, 0); + + write32(pmmio + VGA0, 0x200074); + write32(pmmio + VGA1, 0x200074); + + write32(pmmio + DSPFW3, 0x7f3f00c1 & ~PINEVIEW_SELF_REFRESH_EN); + write32(pmmio + DSPCLK_GATE_D, 0); + write32(pmmio + FW_BLC, 0x03060106); + write32(pmmio + FW_BLC2, 0x00000306); + + write32(pmmio + ADPA, ADPA_DAC_ENABLE + | ADPA_PIPE_A_SELECT + | ADPA_USE_VGA_HVPOLARITY + | ADPA_VSYNC_CNTL_ENABLE + | ADPA_HSYNC_CNTL_ENABLE + | ADPA_DPMS_ON + ); + + write32(pmmio + 0x7041c, 0x0); + + write32(pmmio + DPLL_MD(0), 0x3); + write32(pmmio + DPLL_MD(1), 0x3); + write32(pmmio + DSPCNTR(1), 0x1000000); + write32(pmmio + PIPESRC(1), 0x027f01df); + + vga_misc_write(0x67); + const u8 cr[] = { 0x5f, 0x4f, 0x50, 0x82, 0x55, 0x81, 0xbf, 0x1f, + 0x00, 0x4f, 0x0d, 0x0e, 0x00, 0x00, 0x00, 0x00, + 0x9c, 0x8e, 0x8f, 0x28, 0x1f, 0x96, 0xb9, 0xa3, + 0xff + }; + vga_cr_write(0x11, 0); + + for (i = 0; i <= 0x18; i++) + vga_cr_write(i, cr[i]); + + // Disable screen memory to prevent garbage from appearing. + vga_sr_write(1, vga_sr_read(1) | 0x20); + hactive = 640; + vactive = 400; + + mdelay(1); + write32(pmmio + DPLL(0), + DPLL_VCO_ENABLE | DPLLB_MODE_DAC_SERIAL + | DPLL_VGA_MODE_DIS + | DPLL_DAC_SERIAL_P2_CLOCK_DIV_10 + | 0x400601 + ); + mdelay(1); + write32(pmmio + DPLL(0), + DPLL_VCO_ENABLE | DPLLB_MODE_DAC_SERIAL + | DPLL_VGA_MODE_DIS + | DPLL_DAC_SERIAL_P2_CLOCK_DIV_10 + | 0x400601 + ); + + write32(pmmio + ADPA, ADPA_DAC_ENABLE + | ADPA_PIPE_A_SELECT + | ADPA_USE_VGA_HVPOLARITY + | ADPA_VSYNC_CNTL_ENABLE + | ADPA_HSYNC_CNTL_ENABLE + | ADPA_DPMS_ON + ); + + write32(pmmio + HTOTAL(0), + ((hactive - 1) << 16) + | (hactive - 1)); + write32(pmmio + HBLANK(0), + ((hactive - 1) << 16) + | (hactive - 1)); + write32(pmmio + HSYNC(0), + ((hactive - 1) << 16) + | (hactive - 1)); + + write32(pmmio + VTOTAL(0), ((vactive - 1) << 16) + | (vactive - 1)); + write32(pmmio + VBLANK(0), ((vactive - 1) << 16) + | (vactive - 1)); + write32(pmmio + VSYNC(0), + ((vactive - 1) << 16) + | (vactive - 1)); + + write32(pmmio + PF_WIN_POS(0), 0); + + write32(pmmio + PIPESRC(0), (639 << 16) | 399); + write32(pmmio + PF_CTL(0),PF_ENABLE | PF_FILTER_MED_3x3); + write32(pmmio + PF_WIN_SZ(0), vactive | (hactive << 16)); + write32(pmmio + PFIT_CONTROL, 0x0); + + mdelay(1); + + write32(pmmio + FDI_RX_CTL(0), 0x00002040); + mdelay(1); + write32(pmmio + FDI_RX_CTL(0), 0x80002050); + write32(pmmio + FDI_TX_CTL(0), 0x00044000); + mdelay(1); + write32(pmmio + FDI_TX_CTL(0), 0x80044000); + write32(pmmio + PIPECONF(0), PIPECONF_ENABLE | PIPECONF_BPP_6 | PIPECONF_DITHER_EN); + + write32(pmmio + VGACNTRL, 0x0); + write32(pmmio + DSPCNTR(0), DISPLAY_PLANE_ENABLE | DISPPLANE_BGRX888); + mdelay(1); + + write32(pmmio + ADPA, ADPA_DAC_ENABLE + | ADPA_PIPE_A_SELECT + | ADPA_USE_VGA_HVPOLARITY + | ADPA_VSYNC_CNTL_ENABLE + | ADPA_HSYNC_CNTL_ENABLE + | ADPA_DPMS_ON + ); + + write32(pmmio + DSPFW3, 0x7f3f00c1); + write32(pmmio + MI_MODE, 0x200 | VS_TIMER_DISPATCH); + write32(pmmio + CACHE_MODE_0, (0x6820 | (1 << 9)) & ~(1 << 5)); + write32(pmmio + CACHE_MODE_1, 0x380 & ~(1 << 9)); + + /* Set up GTT. */ + + reg16 = pci_read_config16(dev_find_slot(0, PCI_DEVFN(0, 0)), GGC); + uma_size = 0; + if (!(reg16 & 2)) { + uma_size = decode_igd_memory_size((reg16 >> 4) & 7); + printk(BIOS_DEBUG, "%dM UMA\n", uma_size >> 10); + } + + for (i = 0; i < (uma_size - 256) / 4; i++) + { + outl((i << 2) | 1, piobase); + outl(pphysbase + (i << 12) + 1, piobase + 4); + } + + /* Clear interrupts. */ + write32(pmmio + DEIIR, 0xffffffff); + write32(pmmio + SDEIIR, 0xffffffff); + write32(pmmio + IIR, 0xffffffff); + write32(pmmio + IMR, 0xffffffff); + write32(pmmio + EIR, 0xffffffff); + + vga_textmode_init(); + + /* Enable screen memory. */ + vga_sr_write(1, vga_sr_read(1) & ~0x20); + + return 0; + +} + +/* compare the header of the vga edid header */ +/* if vga is not connected it should have a correct header */ +static int vga_connected(u8 *pmmio) { + u8 vga_edid[128]; + u8 header[8] = {0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00}; + intel_gmbus_read_edid(pmmio + GMBUS0, 2, 0x50, vga_edid, 128); + intel_gmbus_stop(pmmio + GMBUS0); + for (int i = 0; i < 8; i++) { + if (vga_edid[i] != header[i]) { + printk(BIOS_DEBUG, "VGA not connected. Using LVDS display\n"); + return 0; + } + } + printk(BIOS_SPEW, "VGA display connected\n"); + return 1; +} + #endif static void gma_func0_init(struct device *dev) @@ -424,7 +612,11 @@ static void gma_func0_init(struct device *dev) ); int err; - err = intel_gma_init(conf, pci_read_config32(dev, 0x5c) & ~0xf, + if (vga_connected(mmiobase)) + err = intel_gma_init_vga(conf, pci_read_config32(dev, 0x5c) & ~0xf, + iobase, mmiobase, graphics_base); + else + err = intel_gma_init_lvds(conf, pci_read_config32(dev, 0x5c) & ~0xf, iobase, mmiobase, graphics_base); if (err == 0) gfx_set_init_done(1); |