/* * This file is part of the LinuxBIOS project. * * Copyright (C) 2007 Advanced Micro Devices, Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include #include #include "cs5536.h" struct msrinit { u32 msrnum; struct msr msr; }; /* Master configuration register for bus masters */ static struct msrinit SB_MASTER_CONF_TABLE[] = { {USB2_SB_GLD_MSR_CONF, {.hi = 0,.lo = 0x00008f000}}, {ATA_SB_GLD_MSR_CONF, {.hi = 0,.lo = 0x00048f000}}, {AC97_SB_GLD_MSR_CONF, {.hi = 0,.lo = 0x00008f000}}, {MDD_SB_GLD_MSR_CONF, {.hi = 0,.lo = 0x00000f000}}, {0, {0, 0}} }; /* CS5536 clock gating */ static struct msrinit CS5536_CLOCK_GATING_TABLE[] = { {GLIU_SB_GLD_MSR_PM, {.hi = 0,.lo = 0x000000004}}, {GLPCI_SB_GLD_MSR_PM, {.hi = 0,.lo = 0x000000005}}, {GLCP_SB_GLD_MSR_PM, {.hi = 0,.lo = 0x000000004}}, {MDD_SB_GLD_MSR_PM, {.hi = 0,.lo = 0x050554111}}, /* SMBus clock gating errata (PBZ 2226 & SiBZ 3977) */ {ATA_SB_GLD_MSR_PM, {.hi = 0,.lo = 0x000000005}}, {AC97_SB_GLD_MSR_PM, {.hi = 0,.lo = 0x000000005}}, {0, {0, 0}} }; struct acpi_init { u16 ioreg; u32 regdata; }; static const struct acpi_init acpi_init_table[] = { {ACPI_IO_BASE + 0x00, 0x01000000}, {ACPI_IO_BASE + 0x08, 0x00000000}, {ACPI_IO_BASE + 0x0C, 0x00000000}, {ACPI_IO_BASE + 0x1C, 0x00000000}, {ACPI_IO_BASE + 0x18, 0xFFFFFFFF}, {ACPI_IO_BASE + 0x00, 0x0000FFFF}, {PMS_IO_BASE + PM_SCLK, 0x00000E00}, {PMS_IO_BASE + PM_SED, 0x00004601}, {PMS_IO_BASE + PM_SIDD, 0x00008C02}, {PMS_IO_BASE + PM_WKD, 0x000000A0}, {PMS_IO_BASE + PM_WKXD, 0x000000A0}, {0, 0} }; struct FLASH_DEVICE { unsigned char fType; /* Flash type: NOR or NAND */ unsigned char fInterface; /* Flash interface: I/O or memory */ unsigned long fMask; /* Flash size/mask */ }; static const struct FLASH_DEVICE FlashInitTable[] = { {FLASH_TYPE_NAND, FLASH_IF_MEM, FLASH_MEM_4K}, /* CS0, or Flash Device 0 */ {FLASH_TYPE_NONE, 0, 0}, /* CS1, or Flash Device 1 */ {FLASH_TYPE_NONE, 0, 0}, /* CS2, or Flash Device 2 */ {FLASH_TYPE_NONE, 0, 0}, /* CS3, or Flash Device 3 */ }; static const u32 FlashPort[] = { MDD_LBAR_FLSH0, MDD_LBAR_FLSH1, MDD_LBAR_FLSH2, MDD_LBAR_FLSH3 }; /** * Program ACPI LBAR and initialize ACPI registers. */ static void pm_chipset_init(void) { u32 val = 0; u16 port; port = (PMS_IO_BASE + 0x010); val = 0x0E00; /* 1ms */ outl(val, port); /* PM_WKXD */ /* Make sure bits[3:0]=0000b to clear the saved Sx state. */ port = (PMS_IO_BASE + PM_WKXD); val = 0x0A0; /* 5ms */ outl(val, port); /* PM_WKD */ port = (PMS_IO_BASE + PM_WKD); outl(val, port); /* PM_SED */ port = (PMS_IO_BASE + PM_SED); val = 0x04601; /* 5ms, # of 3.57954MHz clock edges */ outl(val, port); /* PM_SIDD */ port = (PMS_IO_BASE + PM_SIDD); val = 0x08C02; /* 10ms, # of 3.57954MHz clock edges */ outl(val, port); } /** * Flash LBARs need to be setup before VSA init so the PCI BARs have * correct size info. Call this routine only if flash needs to be * configured (don't call it if you want IDE). */ static void chipset_flash_setup(void) { int i; struct msr msr; int numEnabled = 0; printk(BIOS_DEBUG, "chipset_flash_setup: Start\n"); for (i = 0; i < ARRAY_SIZE(FlashInitTable); i++) { if (FlashInitTable[i].fType != FLASH_TYPE_NONE) { printk(BIOS_DEBUG, "Enable CS%d\n", i); /* We need to configure the memory/IO mask. */ msr = rdmsr(FlashPort[i]); msr.hi = 0; /* Start with "enabled" bit clear. */ if (FlashInitTable[i].fType == FLASH_TYPE_NAND) msr.hi |= 0x00000002; else msr.hi &= ~0x00000002; if (FlashInitTable[i].fInterface == FLASH_IF_MEM) msr.hi |= 0x00000004; else msr.hi &= ~0x00000004; msr.hi |= FlashInitTable[i].fMask; printk(BIOS_DEBUG, "MSR(0x%08X, %08X_%08X)\n", FlashPort[i], msr.hi, msr.lo); wrmsr(FlashPort[i], msr); /* Now write-enable the device. */ msr = rdmsr(MDD_NORF_CNTRL); msr.lo |= (1 << i); printk(BIOS_DEBUG, "MSR(0x%08X, %08X_%08X)\n", MDD_NORF_CNTRL, msr.hi, msr.lo); wrmsr(MDD_NORF_CNTRL, msr); /* Update the number enabled. */ numEnabled++; } } printk(BIOS_DEBUG, "chipset_flash_setup: Finish\n"); } /** * Use this in the event that you have a FLASH part instead of an IDE drive. * Run after VSA init to enable the flash PCI device header. */ static void enable_ide_nand_flash_header(void) { /* Tell VSA to use FLASH PCI header. Not IDE header. */ outl(0x80007A40, 0xCF8); outl(0xDEADBEEF, 0xCFC); } #define RTC_CENTURY 0x32 #define RTC_DOMA 0x3D #define RTC_MONA 0x3E /** * Standard init function for the LPC bus. * * Sets up the "serial irq" interrupt, which is NOT the same as serial * interrupt, and also enables DMA from the LPC bus. Configures the PC clock, * enables RTC and ISA DMA. * * @param sb Southbridge config structure. */ static void lpc_init(struct southbridge_amd_cs5536_config *sb) { struct msr msr; if (sb->lpc_serirq_enable) { msr.lo = sb->lpc_serirq_enable; msr.hi = 0; wrmsr(MDD_IRQM_LPC, msr); if (sb->lpc_serirq_polarity) { msr.lo = sb->lpc_serirq_polarity << 16; msr.lo |= (sb->lpc_serirq_mode << 6) | (1 << 7); /* Enable */ msr.hi = 0; wrmsr(MDD_LPC_SIRQ, msr); } } /* Allow DMA from LPC. */ msr = rdmsr(MDD_DMA_MAP); msr.lo = 0x7777; wrmsr(MDD_DMA_MAP, msr); /* Enable the RTC/CMOS century byte at address 0x32. */ msr = rdmsr(MDD_RTC_CENTURY_OFFSET); msr.lo = RTC_CENTURY; wrmsr(MDD_RTC_CENTURY_OFFSET, msr); /* Enable the RTC/CMOS day of month and month alarms. */ msr = rdmsr(MDD_RTC_DOMA_IND); msr.lo = RTC_DOMA; wrmsr(MDD_RTC_DOMA_IND, msr); msr = rdmsr(MDD_RTC_MONA_IND); msr.lo = RTC_MONA; wrmsr(MDD_RTC_MONA_IND, msr); rtc_init(0); isa_dma_init(); } /** * Depending on settings in the config struct, enable COM1 or COM2 or both. * * If the enable is NOT set, the UARTs are explicitly disabled, which is * required if (e.g.) there is a Super I/O attached that does COM1 or COM2. * * @param sb Southbridge config structure. */ static void uarts_init(struct southbridge_amd_cs5536_config *sb) { struct msr msr; u16 addr = 0; u32 gpio_addr; struct device *dev; dev = dev_find_device(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, 0); gpio_addr = pci_read_config32(dev, PCI_BASE_ADDRESS_1); gpio_addr &= ~1; /* Clear I/O bit */ printk(BIOS_DEBUG, "GPIO_ADDR: %08X\n", gpio_addr); /* This could be extended to support IR modes. */ /* COM1 */ if (sb->com1_enable) { /* Set the address. */ switch (sb->com1_address) { case 0x3F8: addr = 7; break; case 0x3E8: addr = 6; break; case 0x2F8: addr = 5; break; case 0x2E8: addr = 4; break; } msr = rdmsr(MDD_LEG_IO); msr.lo |= addr << 16; wrmsr(MDD_LEG_IO, msr); /* Set the IRQ. */ msr = rdmsr(MDD_IRQM_YHIGH); msr.lo |= sb->com1_irq << 24; wrmsr(MDD_IRQM_YHIGH, msr); /* GPIO8 - UART1_TX */ /* Set: Output Enable (0x4) */ outl(GPIOL_8_SET, gpio_addr + GPIOL_OUTPUT_ENABLE); /* Set: OUTAUX1 Select (0x10) */ outl(GPIOL_8_SET, gpio_addr + GPIOL_OUT_AUX1_SELECT); /* GPIO8 - UART1_RX */ /* Set: Input Enable (0x20) */ outl(GPIOL_9_SET, gpio_addr + GPIOL_INPUT_ENABLE); /* Set: INAUX1 Select (0x34) */ outl(GPIOL_9_SET, gpio_addr + GPIOL_IN_AUX1_SELECT); /* Set: GPIO 8 + 9 Pull Up (0x18) */ outl(GPIOL_8_SET | GPIOL_9_SET, gpio_addr + GPIOL_PULLUP_ENABLE); /* Enable COM1. * * Bit 1 = device enable * Bit 4 = allow access to the upper banks */ msr.lo = (1 << 4) | (1 << 1); msr.hi = 0; wrmsr(MDD_UART1_CONF, msr); } else { /* Reset and disable COM1. */ msr = rdmsr(MDD_UART1_CONF); msr.lo = 1; /* Reset */ wrmsr(MDD_UART1_CONF, msr); msr.lo = 0; /* Disabled */ wrmsr(MDD_UART1_CONF, msr); /* Disable the IRQ. */ msr = rdmsr(MDD_LEG_IO); msr.lo &= ~(0xF << 16); wrmsr(MDD_LEG_IO, msr); } /* COM2 */ if (sb->com2_enable) { switch (sb->com2_address) { case 0x3F8: addr = 7; break; case 0x3E8: addr = 6; break; case 0x2F8: addr = 5; break; case 0x2E8: addr = 4; break; } msr = rdmsr(MDD_LEG_IO); msr.lo |= addr << 20; wrmsr(MDD_LEG_IO, msr); /* Set the IRQ. */ msr = rdmsr(MDD_IRQM_YHIGH); msr.lo |= sb->com2_irq << 28; wrmsr(MDD_IRQM_YHIGH, msr); /* GPIO3 - UART2_RX */ /* Set: Output Enable (0x4) */ outl(GPIOL_3_SET, gpio_addr + GPIOL_OUTPUT_ENABLE); /* Set: OUTAUX1 Select (0x10) */ outl(GPIOL_3_SET, gpio_addr + GPIOL_OUT_AUX1_SELECT); /* GPIO4 - UART2_TX */ /* Set: Input Enable (0x20) */ outl(GPIOL_4_SET, gpio_addr + GPIOL_INPUT_ENABLE); /* Set: INAUX1 Select (0x34) */ outl(GPIOL_4_SET, gpio_addr + GPIOL_IN_AUX1_SELECT); /* Set: GPIO 3 + 3 Pull Up (0x18) */ outl(GPIOL_3_SET | GPIOL_4_SET, gpio_addr + GPIOL_PULLUP_ENABLE); /* Enable COM2. * * Bit 1 = device enable * Bit 4 = allow access to the upper banks */ msr.lo = (1 << 4) | (1 << 1); msr.hi = 0; wrmsr(MDD_UART2_CONF, msr); } else { /* Reset and disable COM2. */ msr = rdmsr(MDD_UART2_CONF); msr.lo = 1; /* Reset */ wrmsr(MDD_UART2_CONF, msr); msr.lo = 0; /* Disabled */ wrmsr(MDD_UART2_CONF, msr); /* Disable the IRQ. */ msr = rdmsr(MDD_LEG_IO); msr.lo &= ~(0xF << 20); wrmsr(MDD_LEG_IO, msr); } } #define HCCPARAMS 0x08 #define IPREG04 0xA0 #define USB_HCCPW_SET (1 << 1) #define UOCCAP 0x00 #define APU_SET (1 << 15) #define UOCMUX 0x04 #define PMUX_HOST 0x02 #define PMUX_DEVICE 0x03 #define PUEN_SET (1 << 2) #define UDCDEVCTL 0x404 #define UDC_SD_SET (1 << 10) #define UOCCTL 0x0C #define PADEN_SET (1 << 7) /** * Depending on settings in the config struct, manage USB setup. * * @param sb Southbridge config structure. */ static void enable_USB_port4(struct southbridge_amd_cs5536_config *sb) { u32 *bar; struct msr msr; struct device *dev; dev = dev_find_device(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_EHCI, 0); if (dev) { /* Serial short detect enable */ msr = rdmsr(USB2_SB_GLD_MSR_CONF); msr.hi |= USB2_UPPER_SSDEN_SET; wrmsr(USB2_SB_GLD_MSR_CONF, msr); /* Write to clear diag register. */ wrmsr(USB2_SB_GLD_MSR_DIAG, rdmsr(USB2_SB_GLD_MSR_DIAG)); bar = (u32 *) pci_read_config32(dev, PCI_BASE_ADDRESS_0); /* Make HCCPARAMS writable. */ *(bar + IPREG04) |= USB_HCCPW_SET; /* EECP=50h, IST=01h, ASPC=1 */ *(bar + HCCPARAMS) = 0x00005012; } dev = dev_find_device(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_OTG, 0); if (dev) { bar = (u32 *) pci_read_config32(dev, PCI_BASE_ADDRESS_0); *(bar + UOCMUX) &= PUEN_SET; /* Host or Device? */ if (sb->enable_USBP4_device) { *(bar + UOCMUX) |= PMUX_DEVICE; } else { *(bar + UOCMUX) |= PMUX_HOST; } /* Overcurrent configuration */ if (sb->enable_USBP4_overcurrent) { *(bar + UOCCAP) |= sb->enable_USBP4_overcurrent; } } /* PBz#6466: If the UOC(OTG) device, port 4, is configured as a * device, then perform the following sequence: * - Set SD bit in DEVCTRL udc register * - Set PADEN (former OTGPADEN) bit in uoc register * - Set APU bit in uoc register */ if (sb->enable_USBP4_device) { dev = dev_find_device(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_UDC, 0); if (dev) { bar = (u32 *)pci_read_config32(dev, PCI_BASE_ADDRESS_0); *(bar + UDCDEVCTL) |= UDC_SD_SET; } dev = dev_find_device(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_OTG, 0); if (dev) { bar = (u32 *)pci_read_config32(dev, PCI_BASE_ADDRESS_0); *(bar + UOCCTL) |= PADEN_SET; *(bar + UOCCAP) |= APU_SET; } } /* Disable virtual PCI UDC and OTG headers. */ dev = dev_find_device(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_UDC, 0); if (dev) { pci_write_config32(dev, 0x7C, 0xDEADBEEF); } dev = dev_find_device(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_OTG, 0); if (dev) { pci_write_config32(dev, 0x7C, 0xDEADBEEF); } } /** * This function initializes a lot of nasty bits needed for phase 2. * * Can this function run before vsm is set up, or is it required for vsm? * The order here is a little hard to figure out. * * This function is in an odd place. We need to see about moving it to * geodelx.c. But for now, let's get things working and put a #warning in. */ void chipsetinit(void) { struct device *dev; struct msr msr; u32 msrnum; struct southbridge_amd_cs5536_config *sb; struct msrinit *csi; post_code(P80_CHIPSET_INIT); dev = dev_find_device(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, 0); if (!dev) { printk(BIOS_ERR, "%s: Could not find the south bridge!\n", __FUNCTION__); return; } sb = (struct southbridge_amd_cs5536_config *)dev->device_configuration; #if 0 if (!IsS3Resume()) { struct acpi_init *aci = acpi_init_table; for (; aci->ioreg; aci++) { outl(aci->regdata, aci->ioreg); inl(aci->ioreg); } pm_chipset_init(); } #endif /* Set HD IRQ. */ outl(GPIOL_2_SET, GPIO_IO_BASE + GPIOL_INPUT_ENABLE); outl(GPIOL_2_SET, GPIO_IO_BASE + GPIOL_IN_AUX1_SELECT); /* Allow I/O reads and writes during a ATA DMA operation. This could * be done in the HD ROM but do it here for easier debugging. */ msrnum = ATA_SB_GLD_MSR_ERR; msr = rdmsr(msrnum); msr.lo &= ~0x100; wrmsr(msrnum, msr); /* Enable post primary IDE. */ msrnum = GLPCI_SB_CTRL; msr = rdmsr(msrnum); msr.lo |= GLPCI_CRTL_PPIDE_SET; wrmsr(msrnum, msr); csi = SB_MASTER_CONF_TABLE; for (/* Nothing */; csi->msrnum; csi++) { msr.lo = csi->msr.lo; msr.hi = csi->msr.hi; wrmsr(csi->msrnum, msr); /* MSR - see table above */ } /* Flash BAR size setup. */ printk(BIOS_ERR, "%sDoing chipset_flash_setup()\n", sb->enable_ide_nand_flash == 1 ? "" : "Not "); if (sb->enable_ide_nand_flash == 1) chipset_flash_setup(); /* Set up hardware clock gating. */ /* TODO: Why the extra block here? Can it be removed? */ { csi = CS5536_CLOCK_GATING_TABLE; for (/* Nothing */; csi->msrnum; csi++) { msr.lo = csi->msr.lo; msr.hi = csi->msr.hi; wrmsr(csi->msrnum, msr); /* MSR - see table above */ } } } /** * TODO. * * @param dev The device to use. */ static void southbridge_init(struct device *dev) { struct southbridge_amd_cs5536_config *sb = (struct southbridge_amd_cs5536_config *)dev->device_configuration; /* * struct device *gpiodev; * unsigned short gpiobase = MDD_GPIO; */ printk(BIOS_ERR, "cs5536: %s\n", __FUNCTION__); setup_i8259(); lpc_init(sb); uarts_init(sb); if (sb->enable_gpio_int_route) { vr_write((VRC_MISCELLANEOUS << 8) + PCI_INT_AB, (sb->enable_gpio_int_route & 0xFFFF)); vr_write((VRC_MISCELLANEOUS << 8) + PCI_INT_CD, (sb->enable_gpio_int_route >> 16)); } printk(BIOS_ERR, "cs5536: %s: enable_ide_nand_flash is %d\n", __FUNCTION__, sb->enable_ide_nand_flash); if (sb->enable_ide_nand_flash == 1) { enable_ide_nand_flash_header(); } enable_USB_port4(sb); #warning Add back in unwanted VPCI support #if 0 /* Disable unwanted virtual PCI devices. */ for (i = 0; (i < MAX_UNWANTED_VPCI) && (0 != sb->unwanted_vpci[i]); i++) { printk(BIOS_DEBUG, "Disabling VPCI device: 0x%08X\n", sb->unwanted_vpci[i]); outl(sb->unwanted_vpci[i] + 0x7C, 0xCF8); outl(0xDEADBEEF, 0xCFC); } #endif } static void southbridge_enable(struct device *dev) { printk(BIOS_ERR, "cs5536: Enter %s: dev is %p\n", __FUNCTION__, dev); printk(BIOS_ERR, "cs5536: Exit %s: dev is %p\n", __FUNCTION__, dev); } /** * A slightly different enable resources than the standard. * We grab control here as VSA has played in this chip as well. * * @param dev The device to use. */ static void cs5536_pci_dev_enable_resources(struct device *dev) { /* TODO: Shouldn't this be BIOS_SPEW? */ printk(BIOS_ERR, "cs5536: %s()\n", __FUNCTION__); pci_dev_enable_resources(dev); enable_childrens_resources(dev); } static struct device_operations southbridge_ops = { .phase3_scan = scan_static_bus, .phase4_read_resources = pci_dev_read_resources, .phase4_set_resources = pci_dev_set_resources, .phase5_enable_resources = cs5536_pci_dev_enable_resources, .phase6_init = southbridge_init, }; struct constructor cs5536_constructors[] = { {.id = {.type = DEVICE_ID_PCI, .u = {.pci = {.vendor = PCI_VENDOR_ID_AMD, .device = PCI_DEVICE_ID_AMD_CS5536_ISA}}}, .ops = &southbridge_ops}, {.ops = 0}, };