2 * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
4 * SPDX-License-Identifier: GPL-2.0+
12 #include <asm/arch/device.h>
13 #include <asm/arch/tnc.h>
14 #include <asm/fsp/fsp_support.h>
15 #include <asm/processor.h>
17 static void unprotect_spi_flash(void)
21 bc = x86_pci_read_config32(TNC_LPC, 0xd8);
22 bc |= 0x1; /* unprotect the flash */
23 x86_pci_write_config32(TNC_LPC, 0xd8, bc);
26 int arch_cpu_init(void)
30 post_code(POST_CPU_INIT);
31 #ifdef CONFIG_SYS_X86_TSC_TIMER
32 timer_set_base(rdtsc());
35 ret = x86_cpu_init_f();
42 void cpu_irq_init(void)
44 struct tnc_rcba *rcba;
47 base = x86_pci_read_config32(TNC_LPC, LPC_RCBA);
49 rcba = (struct tnc_rcba *)base;
51 /* Make sure all internal PCI devices are using INTA */
52 writel(INTA, &rcba->d02ip);
53 writel(INTA, &rcba->d03ip);
54 writel(INTA, &rcba->d27ip);
55 writel(INTA, &rcba->d31ip);
56 writel(INTA, &rcba->d23ip);
57 writel(INTA, &rcba->d24ip);
58 writel(INTA, &rcba->d25ip);
59 writel(INTA, &rcba->d26ip);
62 * Route TunnelCreek PCI device interrupt pin to PIRQ
64 * Since PCIe downstream ports received INTx are routed to PIRQ
65 * A/B/C/D directly and not configurable, we have to route PCIe
66 * root ports' INTx to PIRQ A/B/C/D as well. For other devices
67 * on TunneCreek, route them to PIRQ E/F/G/H.
69 writew(PIRQE, &rcba->d02ir);
70 writew(PIRQF, &rcba->d03ir);
71 writew(PIRQG, &rcba->d27ir);
72 writew(PIRQH, &rcba->d31ir);
73 writew(PIRQA, &rcba->d23ir);
74 writew(PIRQB, &rcba->d24ir);
75 writew(PIRQC, &rcba->d25ir);
76 writew(PIRQD, &rcba->d26ir);
79 int arch_misc_init(void)
81 unprotect_spi_flash();