56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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#include <console/console.h>
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#include <device/pci.h>
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#include <soc/pci_devs.h>
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#include <soc/util.h>
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void get_stack_busnos(uint32_t *bus)
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{
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uint32_t reg1, reg2;
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reg1 = pci_mmio_read_config32(PCI_DEV(UBOX_DECS_BUS, UBOX_DECS_DEV, UBOX_DECS_FUNC),
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0xcc);
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reg2 = pci_mmio_read_config32(PCI_DEV(UBOX_DECS_BUS, UBOX_DECS_DEV, UBOX_DECS_FUNC),
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0xd0);
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for (int i = 0; i < 4; ++i)
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bus[i] = ((reg1 >> (i * 8)) & 0xff);
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for (int i = 0; i < 2; ++i)
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bus[4+i] = ((reg2 >> (i * 8)) & 0xff);
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}
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void unlock_pam_regions(void)
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{
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uint32_t bus1 = 0;
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uint32_t pam0123_unlock_dram = 0x33333330;
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uint32_t pam456_unlock_dram = 0x00333333;
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get_cpubusnos(NULL, &bus1, NULL, NULL);
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pci_io_write_config32(PCI_DEV(bus1, SAD_ALL_DEV, SAD_ALL_FUNC),
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SAD_ALL_PAM0123_CSR, pam0123_unlock_dram);
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pci_io_write_config32(PCI_DEV(bus1, SAD_ALL_DEV, SAD_ALL_FUNC),
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SAD_ALL_PAM456_CSR, pam456_unlock_dram);
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uint32_t reg1 = pci_io_read_config32(PCI_DEV(bus1, SAD_ALL_DEV,
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SAD_ALL_FUNC), SAD_ALL_PAM0123_CSR);
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uint32_t reg2 = pci_io_read_config32(PCI_DEV(bus1, SAD_ALL_DEV,
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SAD_ALL_FUNC), SAD_ALL_PAM456_CSR);
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printk(BIOS_DEBUG, "%s:%s pam0123_csr: 0x%x, pam456_csr: 0x%x\n",
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__FILE__, __func__, reg1, reg2);
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}
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void get_cpubusnos(uint32_t *bus0, uint32_t *bus1, uint32_t *bus2, uint32_t *bus3)
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{
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uint32_t bus = pci_io_read_config32(PCI_DEV(UBOX_DECS_BUS, UBOX_DECS_DEV,
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UBOX_DECS_FUNC), UBOX_DECS_CPUBUSNO_CSR);
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if (bus0)
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*bus0 = (bus & 0xff);
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if (bus1)
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*bus1 = (bus >> 8) & 0xff;
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if (bus2)
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*bus2 = (bus >> 16) & 0xff;
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if (bus3)
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*bus3 = (bus >> 24) & 0xff;
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}
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