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https://github.com/AsahiLinux/u-boot
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090290f97b
With dm pci conversion, pci config read/write in unprotect_spi_flash() silently fails as at that time dm pci is not ready and bus enumeration is not done yet. Actually we don't need to do this in that early phase, hence we delay this call to arch_misc_init(). Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
84 lines
1.7 KiB
C
84 lines
1.7 KiB
C
/*
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* Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <asm/pci.h>
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#include <asm/post.h>
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#include <asm/arch/device.h>
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#include <asm/arch/tnc.h>
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#include <asm/fsp/fsp_support.h>
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#include <asm/processor.h>
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static void unprotect_spi_flash(void)
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{
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u32 bc;
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bc = x86_pci_read_config32(TNC_LPC, 0xd8);
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bc |= 0x1; /* unprotect the flash */
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x86_pci_write_config32(TNC_LPC, 0xd8, bc);
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}
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int arch_cpu_init(void)
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{
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int ret;
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post_code(POST_CPU_INIT);
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#ifdef CONFIG_SYS_X86_TSC_TIMER
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timer_set_base(rdtsc());
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#endif
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ret = x86_cpu_init_f();
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if (ret)
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return ret;
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return 0;
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}
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void cpu_irq_init(void)
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{
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struct tnc_rcba *rcba;
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u32 base;
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base = x86_pci_read_config32(TNC_LPC, LPC_RCBA);
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base &= ~MEM_BAR_EN;
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rcba = (struct tnc_rcba *)base;
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/* Make sure all internal PCI devices are using INTA */
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writel(INTA, &rcba->d02ip);
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writel(INTA, &rcba->d03ip);
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writel(INTA, &rcba->d27ip);
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writel(INTA, &rcba->d31ip);
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writel(INTA, &rcba->d23ip);
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writel(INTA, &rcba->d24ip);
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writel(INTA, &rcba->d25ip);
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writel(INTA, &rcba->d26ip);
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/*
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* Route TunnelCreek PCI device interrupt pin to PIRQ
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*
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* Since PCIe downstream ports received INTx are routed to PIRQ
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* A/B/C/D directly and not configurable, we have to route PCIe
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* root ports' INTx to PIRQ A/B/C/D as well. For other devices
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* on TunneCreek, route them to PIRQ E/F/G/H.
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*/
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writew(PIRQE, &rcba->d02ir);
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writew(PIRQF, &rcba->d03ir);
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writew(PIRQG, &rcba->d27ir);
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writew(PIRQH, &rcba->d31ir);
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writew(PIRQA, &rcba->d23ir);
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writew(PIRQB, &rcba->d24ir);
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writew(PIRQC, &rcba->d25ir);
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writew(PIRQD, &rcba->d26ir);
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}
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int arch_misc_init(void)
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{
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unprotect_spi_flash();
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return pirq_init();
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}
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