1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
10 #include <asm/ioapic.h>
12 #include <asm/mrccache.h>
16 #include <asm/arch/device.h>
17 #include <asm/arch/msg_port.h>
18 #include <asm/arch/quark.h>
20 static void quark_setup_mtrr(void)
27 /* mark the VGA RAM area as uncacheable */
28 msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_FIX_16K_A0000,
29 MTRR_FIX_TYPE(MTRR_TYPE_UNCACHEABLE));
30 msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_FIX_16K_B0000,
31 MTRR_FIX_TYPE(MTRR_TYPE_UNCACHEABLE));
33 /* mark other fixed range areas as cacheable */
34 msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_FIX_64K_00000,
35 MTRR_FIX_TYPE(MTRR_TYPE_WRBACK));
36 msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_FIX_64K_40000,
37 MTRR_FIX_TYPE(MTRR_TYPE_WRBACK));
38 msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_FIX_16K_80000,
39 MTRR_FIX_TYPE(MTRR_TYPE_WRBACK));
40 msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_FIX_16K_90000,
41 MTRR_FIX_TYPE(MTRR_TYPE_WRBACK));
42 for (i = MTRR_FIX_4K_C0000; i <= MTRR_FIX_4K_FC000; i++)
43 msg_port_write(MSG_PORT_HOST_BRIDGE, i,
44 MTRR_FIX_TYPE(MTRR_TYPE_WRBACK));
46 /* variable range MTRR#0: ROM area */
47 mask = ~(CONFIG_SYS_MONITOR_LEN - 1);
48 base = CONFIG_SYS_TEXT_BASE & mask;
49 msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_VAR_PHYBASE(MTRR_VAR_ROM),
50 base | MTRR_TYPE_WRBACK);
51 msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_VAR_PHYMASK(MTRR_VAR_ROM),
52 mask | MTRR_PHYS_MASK_VALID);
54 /* variable range MTRR#1: eSRAM area */
55 mask = ~(ESRAM_SIZE - 1);
56 base = CONFIG_ESRAM_BASE & mask;
57 msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_VAR_PHYBASE(MTRR_VAR_ESRAM),
58 base | MTRR_TYPE_WRBACK);
59 msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_VAR_PHYMASK(MTRR_VAR_ESRAM),
60 mask | MTRR_PHYS_MASK_VALID);
62 /* enable both variable and fixed range MTRRs */
63 msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_DEF_TYPE,
64 MTRR_DEF_TYPE_EN | MTRR_DEF_TYPE_FIX_EN);
69 static void quark_setup_bars(void)
71 /* GPIO - D31:F0:R44h */
72 qrk_pci_write_config_dword(QUARK_LEGACY_BRIDGE, LB_GBA,
73 CONFIG_GPIO_BASE | IO_BAR_EN);
75 /* ACPI PM1 Block - D31:F0:R48h */
76 qrk_pci_write_config_dword(QUARK_LEGACY_BRIDGE, LB_PM1BLK,
77 CONFIG_ACPI_PM1_BASE | IO_BAR_EN);
79 /* GPE0 - D31:F0:R4Ch */
80 qrk_pci_write_config_dword(QUARK_LEGACY_BRIDGE, LB_GPE0BLK,
81 CONFIG_ACPI_GPE0_BASE | IO_BAR_EN);
83 /* WDT - D31:F0:R84h */
84 qrk_pci_write_config_dword(QUARK_LEGACY_BRIDGE, LB_WDTBA,
85 CONFIG_WDT_BASE | IO_BAR_EN);
87 /* RCBA - D31:F0:RF0h */
88 qrk_pci_write_config_dword(QUARK_LEGACY_BRIDGE, LB_RCBA,
89 CONFIG_RCBA_BASE | MEM_BAR_EN);
91 /* ACPI P Block - Msg Port 04:R70h */
92 msg_port_write(MSG_PORT_RMU, PBLK_BA,
93 CONFIG_ACPI_PBLK_BASE | IO_BAR_EN);
95 /* SPI DMA - Msg Port 04:R7Ah */
96 msg_port_write(MSG_PORT_RMU, SPI_DMA_BA,
97 CONFIG_SPI_DMA_BASE | IO_BAR_EN);
100 msg_port_write(MSG_PORT_MEM_ARBITER, AEC_CTRL,
101 CONFIG_PCIE_ECAM_BASE | MEM_BAR_EN);
102 msg_port_write(MSG_PORT_HOST_BRIDGE, HEC_REG,
103 CONFIG_PCIE_ECAM_BASE | MEM_BAR_EN);
106 static void quark_pcie_early_init(void)
109 * Step1: Assert PCIe signal PERST#
111 * The CPU interface to the PERST# signal is platform dependent.
112 * Call the board-specific codes to perform this task.
114 board_assert_perst();
116 /* Step2: PHY common lane reset */
117 msg_port_alt_setbits(MSG_PORT_SOC_UNIT, PCIE_CFG, PCIE_PHY_LANE_RST);
118 /* wait 1 ms for PHY common lane reset */
121 /* Step3: PHY sideband interface reset and controller main reset */
122 msg_port_alt_setbits(MSG_PORT_SOC_UNIT, PCIE_CFG,
123 PCIE_PHY_SB_RST | PCIE_CTLR_MAIN_RST);
124 /* wait 80ms for PLL to lock */
127 /* Step4: Controller sideband interface reset */
128 msg_port_alt_setbits(MSG_PORT_SOC_UNIT, PCIE_CFG, PCIE_CTLR_SB_RST);
129 /* wait 20ms for controller sideband interface reset */
132 /* Step5: De-assert PERST# */
133 board_deassert_perst();
135 /* Step6: Controller primary interface reset */
136 msg_port_alt_setbits(MSG_PORT_SOC_UNIT, PCIE_CFG, PCIE_CTLR_PRI_RST);
138 /* Mixer Load Lane 0 */
139 msg_port_io_clrbits(MSG_PORT_PCIE_AFE, PCIE_RXPICTRL0_L0,
140 (1 << 6) | (1 << 7));
142 /* Mixer Load Lane 1 */
143 msg_port_io_clrbits(MSG_PORT_PCIE_AFE, PCIE_RXPICTRL0_L1,
144 (1 << 6) | (1 << 7));
147 static void quark_usb_early_init(void)
149 /* The sequence below comes from Quark firmware writer guide */
151 msg_port_alt_clrsetbits(MSG_PORT_USB_AFE, USB2_GLOBAL_PORT,
152 1 << 1, (1 << 6) | (1 << 7));
154 msg_port_alt_clrsetbits(MSG_PORT_USB_AFE, USB2_COMPBG,
155 (1 << 8) | (1 << 9), (1 << 7) | (1 << 10));
157 msg_port_alt_setbits(MSG_PORT_USB_AFE, USB2_PLL2, 1 << 29);
159 msg_port_alt_setbits(MSG_PORT_USB_AFE, USB2_PLL1, 1 << 1);
161 msg_port_alt_clrsetbits(MSG_PORT_USB_AFE, USB2_PLL1,
162 (1 << 3) | (1 << 4) | (1 << 5), 1 << 6);
164 msg_port_alt_clrbits(MSG_PORT_USB_AFE, USB2_PLL2, 1 << 29);
166 msg_port_alt_setbits(MSG_PORT_USB_AFE, USB2_PLL2, 1 << 24);
169 static void quark_thermal_early_init(void)
171 /* The sequence below comes from Quark firmware writer guide */
173 /* thermal sensor mode config */
174 msg_port_alt_clrsetbits(MSG_PORT_SOC_UNIT, TS_CFG1,
175 (1 << 3) | (1 << 4) | (1 << 5), 1 << 5);
176 msg_port_alt_clrsetbits(MSG_PORT_SOC_UNIT, TS_CFG1,
177 (1 << 8) | (1 << 9) | (1 << 10) | (1 << 11) |
179 msg_port_alt_setbits(MSG_PORT_SOC_UNIT, TS_CFG1, 1 << 14);
180 msg_port_alt_clrbits(MSG_PORT_SOC_UNIT, TS_CFG1, 1 << 17);
181 msg_port_alt_clrbits(MSG_PORT_SOC_UNIT, TS_CFG1, 1 << 18);
182 msg_port_alt_clrsetbits(MSG_PORT_SOC_UNIT, TS_CFG2, 0xffff, 0x011f);
183 msg_port_alt_clrsetbits(MSG_PORT_SOC_UNIT, TS_CFG3, 0xff, 0x17);
184 msg_port_alt_clrsetbits(MSG_PORT_SOC_UNIT, TS_CFG3,
185 (1 << 8) | (1 << 9), 1 << 8);
186 msg_port_alt_clrbits(MSG_PORT_SOC_UNIT, TS_CFG3, 0xff000000);
187 msg_port_alt_clrsetbits(MSG_PORT_SOC_UNIT, TS_CFG4,
188 0x7ff800, 0xc8 << 11);
190 /* thermal monitor catastrophic trip set point (105 celsius) */
191 msg_port_clrsetbits(MSG_PORT_RMU, TS_TRIP, 0xff, 155);
193 /* thermal monitor catastrophic trip clear point (0 celsius) */
194 msg_port_clrsetbits(MSG_PORT_RMU, TS_TRIP, 0xff0000, 50 << 16);
196 /* take thermal sensor out of reset */
197 msg_port_alt_clrbits(MSG_PORT_SOC_UNIT, TS_CFG4, 1 << 0);
199 /* enable thermal monitor */
200 msg_port_setbits(MSG_PORT_RMU, TS_MODE, 1 << 15);
202 /* lock all thermal configuration */
203 msg_port_setbits(MSG_PORT_RMU, RMU_CTRL, (1 << 5) | (1 << 6));
206 static void quark_enable_legacy_seg(void)
208 msg_port_setbits(MSG_PORT_HOST_BRIDGE, HMISC2,
209 HMISC2_SEGE | HMISC2_SEGF | HMISC2_SEGAB);
212 int arch_cpu_init(void)
216 post_code(POST_CPU_INIT);
218 ret = x86_cpu_init_f();
223 * Quark SoC does not support MSR MTRRs. Fixed and variable range MTRRs
224 * are accessed indirectly via the message port and not the traditional
225 * MSR mechanism. Only UC, WT and WB cache types are supported.
230 * Quark SoC has some non-standard BARs (excluding PCI standard BARs)
231 * which need be initialized with suggested values
235 /* Initialize USB2 PHY */
236 quark_usb_early_init();
238 /* Initialize thermal sensor */
239 quark_thermal_early_init();
241 /* Turn on legacy segments (A/B/E/F) decode to system RAM */
242 quark_enable_legacy_seg();
247 int arch_cpu_init_dm(void)
250 * Initialize PCIe controller
252 * Quark SoC holds the PCIe controller in reset following a power on.
253 * U-Boot needs to release the PCIe controller from reset. The PCIe
254 * controller (D23:F0/F1) will not be visible in PCI configuration
255 * space and any access to its PCI configuration registers will cause
256 * system hang while it is held in reset.
258 quark_pcie_early_init();
268 int print_cpuinfo(void)
270 post_code(POST_CPU_INFO);
271 return default_print_cpuinfo();
274 static void quark_pcie_init(void)
278 /* PCIe upstream non-posted & posted request size */
279 qrk_pci_write_config_dword(QUARK_PCIE0, PCIE_RP_CCFG,
280 CCFG_UPRS | CCFG_UNRS);
281 qrk_pci_write_config_dword(QUARK_PCIE1, PCIE_RP_CCFG,
282 CCFG_UPRS | CCFG_UNRS);
284 /* PCIe packet fast transmit mode (IPF) */
285 qrk_pci_write_config_dword(QUARK_PCIE0, PCIE_RP_MPC2, MPC2_IPF);
286 qrk_pci_write_config_dword(QUARK_PCIE1, PCIE_RP_MPC2, MPC2_IPF);
288 /* PCIe message bus idle counter (SBIC) */
289 qrk_pci_read_config_dword(QUARK_PCIE0, PCIE_RP_MBC, &val);
291 qrk_pci_write_config_dword(QUARK_PCIE0, PCIE_RP_MBC, val);
292 qrk_pci_read_config_dword(QUARK_PCIE1, PCIE_RP_MBC, &val);
294 qrk_pci_write_config_dword(QUARK_PCIE1, PCIE_RP_MBC, val);
297 static void quark_usb_init(void)
301 /* Change USB EHCI packet buffer OUT/IN threshold */
302 qrk_pci_read_config_dword(QUARK_USB_EHCI, PCI_BASE_ADDRESS_0, &bar);
303 writel((0x7f << 16) | 0x7f, bar + EHCI_INSNREG01);
305 /* Disable USB device interrupts */
306 qrk_pci_read_config_dword(QUARK_USB_DEVICE, PCI_BASE_ADDRESS_0, &bar);
307 writel(0x7f, bar + USBD_INT_MASK);
308 writel((0xf << 16) | 0xf, bar + USBD_EP_INT_MASK);
309 writel((0xf << 16) | 0xf, bar + USBD_EP_INT_STS);
312 static void quark_irq_init(void)
314 struct quark_rcba *rcba;
317 qrk_pci_read_config_dword(QUARK_LEGACY_BRIDGE, LB_RCBA, &base);
319 rcba = (struct quark_rcba *)base;
322 * Route Quark PCI device interrupt pin to PIRQ
324 * Route device#23's INTA/B/C/D to PIRQA/B/C/D
325 * Route device#20,21's INTA/B/C/D to PIRQE/F/G/H
327 writew(PIRQC, &rcba->rmu_ir);
328 writew(PIRQA | (PIRQB << 4) | (PIRQC << 8) | (PIRQD << 12),
330 writew(PIRQD, &rcba->core_ir);
331 writew(PIRQE | (PIRQF << 4) | (PIRQG << 8) | (PIRQH << 12),
335 int arch_early_init_r(void)
346 int arch_misc_init(void)
348 #ifdef CONFIG_ENABLE_MRC_CACHE
350 * We intend not to check any return value here, as even MRC cache
351 * is not saved successfully, it is not a severe error that will
352 * prevent system from continuing to boot.
357 /* Assign a unique I/O APIC ID */
363 void board_final_cleanup(void)
365 struct quark_rcba *rcba;
368 qrk_pci_read_config_dword(QUARK_LEGACY_BRIDGE, LB_RCBA, &base);
370 rcba = (struct quark_rcba *)base;
372 /* Initialize 'Component ID' to zero */
373 val = readl(&rcba->esd);
375 writel(val, &rcba->esd);
377 /* Lock HMBOUND for security */
378 msg_port_setbits(MSG_PORT_HOST_BRIDGE, HM_BOUND, HM_BOUND_LOCK);