mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
361 lines
9.9 KiB
C
361 lines
9.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
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*/
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#include <common.h>
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#include <mmc.h>
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#include <asm/io.h>
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#include <asm/ioapic.h>
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#include <asm/mrccache.h>
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#include <asm/mtrr.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/msg_port.h>
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#include <asm/arch/quark.h>
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static void quark_setup_mtrr(void)
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{
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u32 base, mask;
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int i;
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disable_caches();
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/* mark the VGA RAM area as uncacheable */
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msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_FIX_16K_A0000,
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MTRR_FIX_TYPE(MTRR_TYPE_UNCACHEABLE));
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msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_FIX_16K_B0000,
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MTRR_FIX_TYPE(MTRR_TYPE_UNCACHEABLE));
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/* mark other fixed range areas as cacheable */
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msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_FIX_64K_00000,
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MTRR_FIX_TYPE(MTRR_TYPE_WRBACK));
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msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_FIX_64K_40000,
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MTRR_FIX_TYPE(MTRR_TYPE_WRBACK));
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msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_FIX_16K_80000,
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MTRR_FIX_TYPE(MTRR_TYPE_WRBACK));
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msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_FIX_16K_90000,
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MTRR_FIX_TYPE(MTRR_TYPE_WRBACK));
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for (i = MTRR_FIX_4K_C0000; i <= MTRR_FIX_4K_FC000; i++)
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msg_port_write(MSG_PORT_HOST_BRIDGE, i,
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MTRR_FIX_TYPE(MTRR_TYPE_WRBACK));
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/* variable range MTRR#0: ROM area */
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mask = ~(CONFIG_SYS_MONITOR_LEN - 1);
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base = CONFIG_SYS_TEXT_BASE & mask;
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msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_VAR_PHYBASE(MTRR_VAR_ROM),
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base | MTRR_TYPE_WRBACK);
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msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_VAR_PHYMASK(MTRR_VAR_ROM),
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mask | MTRR_PHYS_MASK_VALID);
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/* variable range MTRR#1: eSRAM area */
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mask = ~(ESRAM_SIZE - 1);
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base = CONFIG_ESRAM_BASE & mask;
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msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_VAR_PHYBASE(MTRR_VAR_ESRAM),
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base | MTRR_TYPE_WRBACK);
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msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_VAR_PHYMASK(MTRR_VAR_ESRAM),
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mask | MTRR_PHYS_MASK_VALID);
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/* enable both variable and fixed range MTRRs */
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msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_DEF_TYPE,
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MTRR_DEF_TYPE_EN | MTRR_DEF_TYPE_FIX_EN);
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enable_caches();
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}
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static void quark_setup_bars(void)
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{
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/* GPIO - D31:F0:R44h */
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qrk_pci_write_config_dword(QUARK_LEGACY_BRIDGE, LB_GBA,
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CONFIG_GPIO_BASE | IO_BAR_EN);
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/* ACPI PM1 Block - D31:F0:R48h */
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qrk_pci_write_config_dword(QUARK_LEGACY_BRIDGE, LB_PM1BLK,
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CONFIG_ACPI_PM1_BASE | IO_BAR_EN);
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/* GPE0 - D31:F0:R4Ch */
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qrk_pci_write_config_dword(QUARK_LEGACY_BRIDGE, LB_GPE0BLK,
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CONFIG_ACPI_GPE0_BASE | IO_BAR_EN);
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/* WDT - D31:F0:R84h */
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qrk_pci_write_config_dword(QUARK_LEGACY_BRIDGE, LB_WDTBA,
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CONFIG_WDT_BASE | IO_BAR_EN);
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/* RCBA - D31:F0:RF0h */
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qrk_pci_write_config_dword(QUARK_LEGACY_BRIDGE, LB_RCBA,
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CONFIG_RCBA_BASE | MEM_BAR_EN);
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/* ACPI P Block - Msg Port 04:R70h */
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msg_port_write(MSG_PORT_RMU, PBLK_BA,
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CONFIG_ACPI_PBLK_BASE | IO_BAR_EN);
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/* SPI DMA - Msg Port 04:R7Ah */
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msg_port_write(MSG_PORT_RMU, SPI_DMA_BA,
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CONFIG_SPI_DMA_BASE | IO_BAR_EN);
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/* PCIe ECAM */
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msg_port_write(MSG_PORT_MEM_ARBITER, AEC_CTRL,
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CONFIG_PCIE_ECAM_BASE | MEM_BAR_EN);
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msg_port_write(MSG_PORT_HOST_BRIDGE, HEC_REG,
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CONFIG_PCIE_ECAM_BASE | MEM_BAR_EN);
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}
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static void quark_pcie_early_init(void)
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{
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/*
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* Step1: Assert PCIe signal PERST#
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*
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* The CPU interface to the PERST# signal is platform dependent.
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* Call the board-specific codes to perform this task.
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*/
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board_assert_perst();
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/* Step2: PHY common lane reset */
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msg_port_alt_setbits(MSG_PORT_SOC_UNIT, PCIE_CFG, PCIE_PHY_LANE_RST);
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/* wait 1 ms for PHY common lane reset */
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mdelay(1);
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/* Step3: PHY sideband interface reset and controller main reset */
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msg_port_alt_setbits(MSG_PORT_SOC_UNIT, PCIE_CFG,
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PCIE_PHY_SB_RST | PCIE_CTLR_MAIN_RST);
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/* wait 80ms for PLL to lock */
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mdelay(80);
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/* Step4: Controller sideband interface reset */
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msg_port_alt_setbits(MSG_PORT_SOC_UNIT, PCIE_CFG, PCIE_CTLR_SB_RST);
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/* wait 20ms for controller sideband interface reset */
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mdelay(20);
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/* Step5: De-assert PERST# */
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board_deassert_perst();
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/* Step6: Controller primary interface reset */
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msg_port_alt_setbits(MSG_PORT_SOC_UNIT, PCIE_CFG, PCIE_CTLR_PRI_RST);
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/* Mixer Load Lane 0 */
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msg_port_io_clrbits(MSG_PORT_PCIE_AFE, PCIE_RXPICTRL0_L0,
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(1 << 6) | (1 << 7));
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/* Mixer Load Lane 1 */
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msg_port_io_clrbits(MSG_PORT_PCIE_AFE, PCIE_RXPICTRL0_L1,
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(1 << 6) | (1 << 7));
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}
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static void quark_usb_early_init(void)
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{
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/* The sequence below comes from Quark firmware writer guide */
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msg_port_alt_clrsetbits(MSG_PORT_USB_AFE, USB2_GLOBAL_PORT,
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1 << 1, (1 << 6) | (1 << 7));
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msg_port_alt_clrsetbits(MSG_PORT_USB_AFE, USB2_COMPBG,
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(1 << 8) | (1 << 9), (1 << 7) | (1 << 10));
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msg_port_alt_setbits(MSG_PORT_USB_AFE, USB2_PLL2, 1 << 29);
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msg_port_alt_setbits(MSG_PORT_USB_AFE, USB2_PLL1, 1 << 1);
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msg_port_alt_clrsetbits(MSG_PORT_USB_AFE, USB2_PLL1,
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(1 << 3) | (1 << 4) | (1 << 5), 1 << 6);
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msg_port_alt_clrbits(MSG_PORT_USB_AFE, USB2_PLL2, 1 << 29);
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msg_port_alt_setbits(MSG_PORT_USB_AFE, USB2_PLL2, 1 << 24);
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}
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static void quark_thermal_early_init(void)
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{
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/* The sequence below comes from Quark firmware writer guide */
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/* thermal sensor mode config */
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msg_port_alt_clrsetbits(MSG_PORT_SOC_UNIT, TS_CFG1,
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(1 << 3) | (1 << 4) | (1 << 5), 1 << 5);
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msg_port_alt_clrsetbits(MSG_PORT_SOC_UNIT, TS_CFG1,
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(1 << 8) | (1 << 9) | (1 << 10) | (1 << 11) |
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(1 << 12), 1 << 9);
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msg_port_alt_setbits(MSG_PORT_SOC_UNIT, TS_CFG1, 1 << 14);
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msg_port_alt_clrbits(MSG_PORT_SOC_UNIT, TS_CFG1, 1 << 17);
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msg_port_alt_clrbits(MSG_PORT_SOC_UNIT, TS_CFG1, 1 << 18);
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msg_port_alt_clrsetbits(MSG_PORT_SOC_UNIT, TS_CFG2, 0xffff, 0x011f);
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msg_port_alt_clrsetbits(MSG_PORT_SOC_UNIT, TS_CFG3, 0xff, 0x17);
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msg_port_alt_clrsetbits(MSG_PORT_SOC_UNIT, TS_CFG3,
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(1 << 8) | (1 << 9), 1 << 8);
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msg_port_alt_clrbits(MSG_PORT_SOC_UNIT, TS_CFG3, 0xff000000);
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msg_port_alt_clrsetbits(MSG_PORT_SOC_UNIT, TS_CFG4,
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0x7ff800, 0xc8 << 11);
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/* thermal monitor catastrophic trip set point (105 celsius) */
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msg_port_clrsetbits(MSG_PORT_RMU, TS_TRIP, 0xff, 155);
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/* thermal monitor catastrophic trip clear point (0 celsius) */
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msg_port_clrsetbits(MSG_PORT_RMU, TS_TRIP, 0xff0000, 50 << 16);
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/* take thermal sensor out of reset */
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msg_port_alt_clrbits(MSG_PORT_SOC_UNIT, TS_CFG4, 1 << 0);
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/* enable thermal monitor */
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msg_port_setbits(MSG_PORT_RMU, TS_MODE, 1 << 15);
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/* lock all thermal configuration */
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msg_port_setbits(MSG_PORT_RMU, RMU_CTRL, (1 << 5) | (1 << 6));
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}
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static void quark_enable_legacy_seg(void)
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{
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msg_port_setbits(MSG_PORT_HOST_BRIDGE, HMISC2,
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HMISC2_SEGE | HMISC2_SEGF | HMISC2_SEGAB);
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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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ret = x86_cpu_init_f();
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if (ret)
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return ret;
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/*
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* Quark SoC does not support MSR MTRRs. Fixed and variable range MTRRs
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* are accessed indirectly via the message port and not the traditional
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* MSR mechanism. Only UC, WT and WB cache types are supported.
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*/
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quark_setup_mtrr();
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/*
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* Quark SoC has some non-standard BARs (excluding PCI standard BARs)
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* which need be initialized with suggested values
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*/
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quark_setup_bars();
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/* Initialize USB2 PHY */
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quark_usb_early_init();
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/* Initialize thermal sensor */
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quark_thermal_early_init();
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/* Turn on legacy segments (A/B/E/F) decode to system RAM */
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quark_enable_legacy_seg();
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return 0;
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}
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int arch_cpu_init_dm(void)
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{
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/*
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* Initialize PCIe controller
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*
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* Quark SoC holds the PCIe controller in reset following a power on.
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* U-Boot needs to release the PCIe controller from reset. The PCIe
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* controller (D23:F0/F1) will not be visible in PCI configuration
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* space and any access to its PCI configuration registers will cause
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* system hang while it is held in reset.
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*/
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quark_pcie_early_init();
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return 0;
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}
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int checkcpu(void)
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{
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return 0;
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}
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int print_cpuinfo(void)
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{
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post_code(POST_CPU_INFO);
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return default_print_cpuinfo();
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}
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void reset_cpu(ulong addr)
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{
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/* cold reset */
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x86_full_reset();
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}
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static void quark_pcie_init(void)
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{
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u32 val;
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/* PCIe upstream non-posted & posted request size */
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qrk_pci_write_config_dword(QUARK_PCIE0, PCIE_RP_CCFG,
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CCFG_UPRS | CCFG_UNRS);
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qrk_pci_write_config_dword(QUARK_PCIE1, PCIE_RP_CCFG,
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CCFG_UPRS | CCFG_UNRS);
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/* PCIe packet fast transmit mode (IPF) */
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qrk_pci_write_config_dword(QUARK_PCIE0, PCIE_RP_MPC2, MPC2_IPF);
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qrk_pci_write_config_dword(QUARK_PCIE1, PCIE_RP_MPC2, MPC2_IPF);
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/* PCIe message bus idle counter (SBIC) */
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qrk_pci_read_config_dword(QUARK_PCIE0, PCIE_RP_MBC, &val);
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val |= MBC_SBIC;
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qrk_pci_write_config_dword(QUARK_PCIE0, PCIE_RP_MBC, val);
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qrk_pci_read_config_dword(QUARK_PCIE1, PCIE_RP_MBC, &val);
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val |= MBC_SBIC;
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qrk_pci_write_config_dword(QUARK_PCIE1, PCIE_RP_MBC, val);
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}
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static void quark_usb_init(void)
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{
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u32 bar;
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/* Change USB EHCI packet buffer OUT/IN threshold */
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qrk_pci_read_config_dword(QUARK_USB_EHCI, PCI_BASE_ADDRESS_0, &bar);
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writel((0x7f << 16) | 0x7f, bar + EHCI_INSNREG01);
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/* Disable USB device interrupts */
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qrk_pci_read_config_dword(QUARK_USB_DEVICE, PCI_BASE_ADDRESS_0, &bar);
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writel(0x7f, bar + USBD_INT_MASK);
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writel((0xf << 16) | 0xf, bar + USBD_EP_INT_MASK);
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writel((0xf << 16) | 0xf, bar + USBD_EP_INT_STS);
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}
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int arch_early_init_r(void)
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{
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quark_pcie_init();
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quark_usb_init();
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return 0;
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}
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int arch_misc_init(void)
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{
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#ifdef CONFIG_ENABLE_MRC_CACHE
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/*
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* We intend not to check any return value here, as even MRC cache
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* is not saved successfully, it is not a severe error that will
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* prevent system from continuing to boot.
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*/
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mrccache_save();
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#endif
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/* Assign a unique I/O APIC ID */
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io_apic_set_id(1);
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return 0;
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}
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void board_final_cleanup(void)
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{
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struct quark_rcba *rcba;
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u32 base, val;
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qrk_pci_read_config_dword(QUARK_LEGACY_BRIDGE, LB_RCBA, &base);
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base &= ~MEM_BAR_EN;
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rcba = (struct quark_rcba *)base;
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/* Initialize 'Component ID' to zero */
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val = readl(&rcba->esd);
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val &= ~0xff0000;
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writel(val, &rcba->esd);
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/* Lock HMBOUND for security */
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msg_port_setbits(MSG_PORT_HOST_BRIDGE, HM_BOUND, HM_BOUND_LOCK);
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return;
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}
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