| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Copyright (C) 2013 Gabor Juhos <juhosg@openwrt.org> |
| * Copyright (C) 2013 Imagination Technologies |
| */ |
| |
| #include <config.h> |
| #include <fdt_support.h> |
| #include <ide.h> |
| #include <init.h> |
| #include <net.h> |
| #include <netdev.h> |
| #include <pci.h> |
| #include <pci_gt64120.h> |
| #include <pci_msc01.h> |
| #include <rtc.h> |
| #include <asm/global_data.h> |
| #include <linux/delay.h> |
| |
| #include <asm/addrspace.h> |
| #include <asm/io.h> |
| #include <asm/malta.h> |
| |
| #include "superio.h" |
| |
| DECLARE_GLOBAL_DATA_PTR; |
| |
| #define MALTA_GT_PATH "/pci0@1be00000" |
| #define MALTA_MSC_PATH "/pci0@1bd00000" |
| |
| enum core_card { |
| CORE_UNKNOWN, |
| CORE_LV, |
| CORE_FPGA6, |
| }; |
| |
| enum sys_con { |
| SYSCON_UNKNOWN, |
| SYSCON_GT64120, |
| SYSCON_MSC01, |
| }; |
| |
| static void malta_lcd_puts(const char *str) |
| { |
| int i; |
| void *reg = (void *)CKSEG1ADDR(MALTA_ASCIIPOS0); |
| |
| /* print up to 8 characters of the string */ |
| for (i = 0; i < min((int)strlen(str), 8); i++) { |
| __raw_writel(str[i], reg); |
| reg += MALTA_ASCIIPOS1 - MALTA_ASCIIPOS0; |
| } |
| |
| /* fill the rest of the display with spaces */ |
| for (; i < 8; i++) { |
| __raw_writel(' ', reg); |
| reg += MALTA_ASCIIPOS1 - MALTA_ASCIIPOS0; |
| } |
| } |
| |
| static enum core_card malta_core_card(void) |
| { |
| u32 corid, rev; |
| const void *reg = (const void *)CKSEG1ADDR(MALTA_REVISION); |
| |
| rev = __raw_readl(reg); |
| corid = (rev & MALTA_REVISION_CORID_MSK) >> MALTA_REVISION_CORID_SHF; |
| |
| switch (corid) { |
| case MALTA_REVISION_CORID_CORE_LV: |
| return CORE_LV; |
| |
| case MALTA_REVISION_CORID_CORE_FPGA6: |
| return CORE_FPGA6; |
| |
| default: |
| return CORE_UNKNOWN; |
| } |
| } |
| |
| static enum sys_con malta_sys_con(void) |
| { |
| switch (malta_core_card()) { |
| case CORE_LV: |
| return SYSCON_GT64120; |
| |
| case CORE_FPGA6: |
| return SYSCON_MSC01; |
| |
| default: |
| return SYSCON_UNKNOWN; |
| } |
| } |
| |
| int dram_init(void) |
| { |
| gd->ram_size = CONFIG_SYS_MEM_SIZE; |
| |
| return 0; |
| } |
| |
| int checkboard(void) |
| { |
| enum core_card core; |
| |
| malta_lcd_puts("U-Boot"); |
| puts("Board: MIPS Malta"); |
| |
| core = malta_core_card(); |
| switch (core) { |
| case CORE_LV: |
| puts(" CoreLV"); |
| break; |
| |
| case CORE_FPGA6: |
| puts(" CoreFPGA6"); |
| break; |
| |
| default: |
| puts(" CoreUnknown"); |
| } |
| |
| putc('\n'); |
| return 0; |
| } |
| |
| #if !IS_ENABLED(CONFIG_DM_ETH) |
| int board_eth_init(struct bd_info *bis) |
| { |
| return pci_eth_init(bis); |
| } |
| #endif |
| |
| void _machine_restart(void) |
| { |
| void __iomem *reset_base; |
| |
| reset_base = (void __iomem *)CKSEG1ADDR(MALTA_RESET_BASE); |
| __raw_writel(GORESET, reset_base); |
| mdelay(1000); |
| } |
| |
| int board_early_init_f(void) |
| { |
| ulong io_base; |
| |
| /* choose correct PCI I/O base */ |
| switch (malta_sys_con()) { |
| case SYSCON_GT64120: |
| io_base = CKSEG1ADDR(MALTA_GT_PCIIO_BASE); |
| break; |
| |
| case SYSCON_MSC01: |
| io_base = CKSEG1ADDR(MALTA_MSC01_PCIIO_BASE); |
| break; |
| |
| default: |
| return -1; |
| } |
| |
| set_io_port_base(io_base); |
| |
| /* setup FDC37M817 super I/O controller */ |
| malta_superio_init(); |
| |
| return 0; |
| } |
| |
| int misc_init_r(void) |
| { |
| rtc_reset(); |
| |
| return 0; |
| } |
| |
| #if IS_ENABLED(CONFIG_OF_BOARD_FIXUP) |
| /* |
| * TODO: currently doesn't work because rw_fdt_blob points to a |
| * NOR flash address. This needs some changes in board_init_f. |
| */ |
| int board_fix_fdt(void *rw_fdt_blob) |
| { |
| int node = -1; |
| |
| switch (malta_sys_con()) { |
| case SYSCON_GT64120: |
| node = fdt_path_offset(rw_fdt_blob, MALTA_GT_PATH); |
| break; |
| default: |
| case SYSCON_MSC01: |
| node = fdt_path_offset(rw_fdt_blob, MALTA_MSC_PATH); |
| break; |
| } |
| |
| return fdt_status_okay(rw_fdt_blob, node); |
| } |
| #endif |
| |
| int board_early_init_r(void) |
| { |
| struct udevice *dev; |
| int ret; |
| |
| pci_init(); |
| |
| ret = dm_pci_find_device(PCI_VENDOR_ID_INTEL, |
| PCI_DEVICE_ID_INTEL_82371AB_0, 0, &dev); |
| if (ret) |
| panic("Failed to find PIIX4 PCI bridge\n"); |
| |
| /* setup PCI interrupt routing */ |
| dm_pci_write_config8(dev, PCI_CFG_PIIX4_PIRQRCA, 10); |
| dm_pci_write_config8(dev, PCI_CFG_PIIX4_PIRQRCB, 10); |
| dm_pci_write_config8(dev, PCI_CFG_PIIX4_PIRQRCC, 11); |
| dm_pci_write_config8(dev, PCI_CFG_PIIX4_PIRQRCD, 11); |
| |
| /* mux SERIRQ onto SERIRQ pin */ |
| dm_pci_clrset_config32(dev, PCI_CFG_PIIX4_GENCFG, 0, |
| PCI_CFG_PIIX4_GENCFG_SERIRQ); |
| |
| /* enable SERIRQ - Linux currently depends upon this */ |
| dm_pci_clrset_config8(dev, PCI_CFG_PIIX4_SERIRQC, 0, |
| PCI_CFG_PIIX4_SERIRQC_EN | PCI_CFG_PIIX4_SERIRQC_CONT); |
| |
| ret = dm_pci_find_device(PCI_VENDOR_ID_INTEL, |
| PCI_DEVICE_ID_INTEL_82371AB, 0, &dev); |
| if (ret) |
| panic("Failed to find PIIX4 IDE controller\n"); |
| |
| /* enable bus master & IO access */ |
| dm_pci_clrset_config32(dev, PCI_COMMAND, 0, |
| PCI_COMMAND_MASTER | PCI_COMMAND_IO); |
| |
| /* set latency */ |
| dm_pci_write_config8(dev, PCI_LATENCY_TIMER, 0x40); |
| |
| /* enable IDE/ATA */ |
| dm_pci_write_config32(dev, PCI_CFG_PIIX4_IDETIM_PRI, |
| PCI_CFG_PIIX4_IDETIM_IDE); |
| dm_pci_write_config32(dev, PCI_CFG_PIIX4_IDETIM_SEC, |
| PCI_CFG_PIIX4_IDETIM_IDE); |
| |
| return 0; |
| } |