Sven Schnelle (svens@stackframe.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/89
-gerrit
commit 87c40a816d41d4953c093decd8ac137235919226 Author: Sven Schnelle svens@stackframe.org Date: Thu Jun 23 19:12:25 2011 +0200
T60: handle EC events in SMM if ACPI is disabled
Change-Id: I6f9e90015cafef3da896453ef8e3588434ae3554 Signed-off-by: Sven Schnelle svens@stackframe.org --- src/mainboard/lenovo/t60/acpi/video.asl | 4 + src/mainboard/lenovo/t60/devicetree.cb | 1 + src/mainboard/lenovo/t60/mainboard.c | 3 +- src/mainboard/lenovo/t60/mainboard_smi.c | 119 +++++++++++++++++++++++++++++- src/mainboard/lenovo/t60/smi.h | 2 + 5 files changed, 126 insertions(+), 3 deletions(-)
diff --git a/src/mainboard/lenovo/t60/acpi/video.asl b/src/mainboard/lenovo/t60/acpi/video.asl index c2f9dfb..9a458e9 100644 --- a/src/mainboard/lenovo/t60/acpi/video.asl +++ b/src/mainboard/lenovo/t60/acpi/video.asl @@ -19,6 +19,8 @@ * MA 02110-1301 USA */
+#include "smi.h" + Device (DSPC) { Name (_ADR, 0x00020001) @@ -31,6 +33,7 @@ Device (DSPC)
Method(BRTD, 0, NotSerialized) { + Trap(SMI_BRIGHTNESS_DOWN) Store(BRTC, Local0) if (LGreater (Local0, 15)) { @@ -41,6 +44,7 @@ Device (DSPC)
Method(BRTU, 0, NotSerialized) { + Trap(SMI_BRIGHTNESS_UP) Store (BRTC, Local0) if (LLess(Local0, 0xff)) { diff --git a/src/mainboard/lenovo/t60/devicetree.cb b/src/mainboard/lenovo/t60/devicetree.cb index 9d7a414..3615e59 100644 --- a/src/mainboard/lenovo/t60/devicetree.cb +++ b/src/mainboard/lenovo/t60/devicetree.cb @@ -66,6 +66,7 @@ chip northbridge/intel/i945 register "sata_ahci" = "0x0"
register "gpe0_en" = "0x11000006" + register "alt_gp_smi_en" = "0x1000"
device pci 1b.0 on # Audio Cnotroller subsystemid 0x17aa 0x2010 diff --git a/src/mainboard/lenovo/t60/mainboard.c b/src/mainboard/lenovo/t60/mainboard.c index 371085b..2b8c5fe 100644 --- a/src/mainboard/lenovo/t60/mainboard.c +++ b/src/mainboard/lenovo/t60/mainboard.c @@ -61,7 +61,8 @@ static void mainboard_enable(device_t dev) }
/* set dock status led */ - ec_write(0x0c, inb(0x164c) & 8 ? 0x88 : 0x08); + ec_write(0x0c, 0x08); + ec_write(0x0c, inb(0x164c) & 8 ? 0x89 : 0x09);
if (get_option(&defaults_loaded, "cmos_defaults_loaded") < 0) { printk(BIOS_INFO, "failed to get cmos_defaults_loaded"); diff --git a/src/mainboard/lenovo/t60/mainboard_smi.c b/src/mainboard/lenovo/t60/mainboard_smi.c index 30c2420..4a0b506 100644 --- a/src/mainboard/lenovo/t60/mainboard_smi.c +++ b/src/mainboard/lenovo/t60/mainboard_smi.c @@ -24,10 +24,12 @@ #include <console/console.h> #include <cpu/x86/smm.h> #include "southbridge/intel/i82801gx/nvs.h" +#include "southbridge/intel/i82801gx/i82801gx.h" #include <ec/acpi/ec.h> #include "dock.h" #include "smi.h"
+#define LVTMA_BL_MOD_LEVEL 0x7af9 /* ATI Radeon backlight level */ /* The southbridge SMI handler checks whether gnvs has a * valid pointer before calling the trap handler */ @@ -38,7 +40,28 @@ static void mainboard_smm_init(void) printk(BIOS_DEBUG, "initializing SMI\n"); /* Enable 0x1600/0x1600 register pair */ ec_set_bit(0x00, 0x05); - ec_set_ports(0x1604, 0x1600); +} + +static void mainboard_smi_brightness_down(void) +{ + u8 *bar; + if ((bar = (u8 *)pci_read_config32(PCI_DEV(1, 0, 0), 0x18))) { + printk(BIOS_DEBUG, "bar: %08X, level %02X\n", (unsigned int)bar, *(bar+LVTMA_BL_MOD_LEVEL)); + *(bar+LVTMA_BL_MOD_LEVEL) &= 0xf0; + if (*(bar+LVTMA_BL_MOD_LEVEL) > 0x10) + *(bar+LVTMA_BL_MOD_LEVEL) -= 0x10; + } +} + +static void mainboard_smi_brightness_up(void) +{ + u8 *bar; + if ((bar = (u8 *)pci_read_config32(PCI_DEV(1, 0, 0), 0x18))) { + printk(BIOS_DEBUG, "bar: %08X, level %02X\n", (unsigned int )bar, *(bar+LVTMA_BL_MOD_LEVEL)); + *(bar+LVTMA_BL_MOD_LEVEL) |= 0x0f; + if (*(bar+LVTMA_BL_MOD_LEVEL) < 0xf0) + *(bar+LVTMA_BL_MOD_LEVEL) += 0x10; + } }
int mainboard_io_trap_handler(int smif) @@ -55,18 +78,29 @@ int mainboard_io_trap_handler(int smif) dlpc_init(); if (!dock_connect()) { /* set dock LED to indicate status */ - ec_write(0x0c, 0x88); + ec_write(0x0c, 0x08); + ec_write(0x0c, 0x89); } else { /* blink dock LED to indicate failure */ ec_write(0x0c, 0xc8); + ec_write(0x0c, 0x09); } break;
case SMI_DOCK_DISCONNECT: dock_disconnect(); + ec_write(0x0c, 0x09); ec_write(0x0c, 0x08); break;
+ case SMI_BRIGHTNESS_UP: + mainboard_smi_brightness_up(); + break; + + case SMI_BRIGHTNESS_DOWN: + mainboard_smi_brightness_down(); + break; + default: return 0; } @@ -76,3 +110,84 @@ int mainboard_io_trap_handler(int smif) return 1; }
+static void mainboard_smi_handle_ec_sci(void) +{ + u8 status = inb(EC_SC); + u8 event; + + if (!(status & EC_SCI_EVT)) + return; + + event = ec_query(); + printk(BIOS_DEBUG, "EC event %02x\n", event); + + switch(event) { + /* brightness up */ + case 0x14: + mainboard_smi_brightness_up(); + break; + /* brightness down */ + case 0x15: + mainboard_smi_brightness_down(); + break; + /* Fn-F9 Key */ + case 0x18: + /* power loss */ + case 0x27: + /* undock event */ + case 0x50: + mainboard_io_trap_handler(SMI_DOCK_DISCONNECT); + break; + /* dock event */ + case 0x37: + mainboard_io_trap_handler(SMI_DOCK_CONNECT); + break; + default: + break; + } +} + +void mainboard_smi_gpi(u16 gpi) +{ + if (gpi & (1 << 12)) + mainboard_smi_handle_ec_sci(); +} + +int mainboard_apm_cnt(u8 data) +{ + u16 pmbase = pci_read_config16(PCI_DEV(0, 0x1f, 0), 0x40) & 0xfffc; + u8 tmp; + + printk(BIOS_DEBUG, "%s: pmbase %04X, data %02X\n", __func__, pmbase, data); + + if (!pmbase) + return 0; + + switch(data) { + case APM_CNT_ACPI_ENABLE: + /* use 0x1600/0x1604 to prevent races with userspace */ + ec_set_ports(0x1604, 0x1600); + /* route H8SCI to SCI */ + outw(inw(ALT_GP_SMI_EN) & ~0x1000, pmbase + ALT_GP_SMI_EN); + tmp = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xbb); + tmp &= ~0x03; + tmp |= 0x02; + pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xbb, tmp); + break; + case APM_CNT_ACPI_DISABLE: + /* we have to use port 0x62/0x66, as 0x1600/0x1604 doesn't + provide a EC query function */ + ec_set_ports(0x66, 0x62); + /* route H8SCI# to SMI */ + outw(inw(pmbase + ALT_GP_SMI_EN) | 0x1000, pmbase + ALT_GP_SMI_EN); + tmp = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xbb); + tmp &= ~0x03; + tmp |= 0x01; + pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xbb, tmp); + break; + default: + break; + } + return 0; +} + diff --git a/src/mainboard/lenovo/t60/smi.h b/src/mainboard/lenovo/t60/smi.h index f89b6bd..f8e8a7c 100644 --- a/src/mainboard/lenovo/t60/smi.h +++ b/src/mainboard/lenovo/t60/smi.h @@ -22,5 +22,7 @@
#define SMI_DOCK_CONNECT 0x01 #define SMI_DOCK_DISCONNECT 0x02 +#define SMI_BRIGHTNESS_UP 0x03 +#define SMI_BRIGHTNESS_DOWN 0x04
#endif