1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
10 #include <asm/cache.h>
12 #include <asm/ioapic.h>
14 #include <asm/mrccache.h>
18 #include <asm/arch/device.h>
19 #include <asm/arch/msg_port.h>
20 #include <asm/arch/quark.h>
22 static void quark_setup_mtrr(void)
29 /* mark the VGA RAM area as uncacheable */
30 msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_FIX_16K_A0000,
31 MTRR_FIX_TYPE(MTRR_TYPE_UNCACHEABLE));
32 msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_FIX_16K_B0000,
33 MTRR_FIX_TYPE(MTRR_TYPE_UNCACHEABLE));
35 /* mark other fixed range areas as cacheable */
36 msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_FIX_64K_00000,
37 MTRR_FIX_TYPE(MTRR_TYPE_WRBACK));
38 msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_FIX_64K_40000,
39 MTRR_FIX_TYPE(MTRR_TYPE_WRBACK));
40 msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_FIX_16K_80000,
41 MTRR_FIX_TYPE(MTRR_TYPE_WRBACK));
42 msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_FIX_16K_90000,
43 MTRR_FIX_TYPE(MTRR_TYPE_WRBACK));
44 for (i = MTRR_FIX_4K_C0000; i <= MTRR_FIX_4K_FC000; i++)
45 msg_port_write(MSG_PORT_HOST_BRIDGE, i,
46 MTRR_FIX_TYPE(MTRR_TYPE_WRBACK));
48 /* variable range MTRR#0: ROM area */
49 mask = ~(CONFIG_SYS_MONITOR_LEN - 1);
50 base = CONFIG_SYS_TEXT_BASE & mask;
51 msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_VAR_PHYBASE(MTRR_VAR_ROM),
52 base | MTRR_TYPE_WRBACK);
53 msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_VAR_PHYMASK(MTRR_VAR_ROM),
54 mask | MTRR_PHYS_MASK_VALID);
56 /* variable range MTRR#1: eSRAM area */
57 mask = ~(ESRAM_SIZE - 1);
58 base = CONFIG_ESRAM_BASE & mask;
59 msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_VAR_PHYBASE(MTRR_VAR_ESRAM),
60 base | MTRR_TYPE_WRBACK);
61 msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_VAR_PHYMASK(MTRR_VAR_ESRAM),
62 mask | MTRR_PHYS_MASK_VALID);
64 /* enable both variable and fixed range MTRRs */
65 msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_DEF_TYPE,
66 MTRR_DEF_TYPE_EN | MTRR_DEF_TYPE_FIX_EN);
71 static void quark_setup_bars(void)
73 /* GPIO - D31:F0:R44h */
74 qrk_pci_write_config_dword(QUARK_LEGACY_BRIDGE, LB_GBA,
75 CONFIG_GPIO_BASE | IO_BAR_EN);
77 /* ACPI PM1 Block - D31:F0:R48h */
78 qrk_pci_write_config_dword(QUARK_LEGACY_BRIDGE, LB_PM1BLK,
79 CONFIG_ACPI_PM1_BASE | IO_BAR_EN);
81 /* GPE0 - D31:F0:R4Ch */
82 qrk_pci_write_config_dword(QUARK_LEGACY_BRIDGE, LB_GPE0BLK,
83 CONFIG_ACPI_GPE0_BASE | IO_BAR_EN);
85 /* WDT - D31:F0:R84h */
86 qrk_pci_write_config_dword(QUARK_LEGACY_BRIDGE, LB_WDTBA,
87 CONFIG_WDT_BASE | IO_BAR_EN);
89 /* RCBA - D31:F0:RF0h */
90 qrk_pci_write_config_dword(QUARK_LEGACY_BRIDGE, LB_RCBA,
91 CONFIG_RCBA_BASE | MEM_BAR_EN);
93 /* ACPI P Block - Msg Port 04:R70h */
94 msg_port_write(MSG_PORT_RMU, PBLK_BA,
95 CONFIG_ACPI_PBLK_BASE | IO_BAR_EN);
97 /* SPI DMA - Msg Port 04:R7Ah */
98 msg_port_write(MSG_PORT_RMU, SPI_DMA_BA,
99 CONFIG_SPI_DMA_BASE | IO_BAR_EN);
102 msg_port_write(MSG_PORT_MEM_ARBITER, AEC_CTRL,
103 CONFIG_PCIE_ECAM_BASE | MEM_BAR_EN);
104 msg_port_write(MSG_PORT_HOST_BRIDGE, HEC_REG,
105 CONFIG_PCIE_ECAM_BASE | MEM_BAR_EN);
108 static void quark_pcie_early_init(void)
111 * Step1: Assert PCIe signal PERST#
113 * The CPU interface to the PERST# signal is platform dependent.
114 * Call the board-specific codes to perform this task.
116 board_assert_perst();
118 /* Step2: PHY common lane reset */
119 msg_port_alt_setbits(MSG_PORT_SOC_UNIT, PCIE_CFG, PCIE_PHY_LANE_RST);
120 /* wait 1 ms for PHY common lane reset */
123 /* Step3: PHY sideband interface reset and controller main reset */
124 msg_port_alt_setbits(MSG_PORT_SOC_UNIT, PCIE_CFG,
125 PCIE_PHY_SB_RST | PCIE_CTLR_MAIN_RST);
126 /* wait 80ms for PLL to lock */
129 /* Step4: Controller sideband interface reset */
130 msg_port_alt_setbits(MSG_PORT_SOC_UNIT, PCIE_CFG, PCIE_CTLR_SB_RST);
131 /* wait 20ms for controller sideband interface reset */
134 /* Step5: De-assert PERST# */
135 board_deassert_perst();
137 /* Step6: Controller primary interface reset */
138 msg_port_alt_setbits(MSG_PORT_SOC_UNIT, PCIE_CFG, PCIE_CTLR_PRI_RST);
140 /* Mixer Load Lane 0 */
141 msg_port_io_clrbits(MSG_PORT_PCIE_AFE, PCIE_RXPICTRL0_L0,
142 (1 << 6) | (1 << 7));
144 /* Mixer Load Lane 1 */
145 msg_port_io_clrbits(MSG_PORT_PCIE_AFE, PCIE_RXPICTRL0_L1,
146 (1 << 6) | (1 << 7));
149 static void quark_usb_early_init(void)
151 /* The sequence below comes from Quark firmware writer guide */
153 msg_port_alt_clrsetbits(MSG_PORT_USB_AFE, USB2_GLOBAL_PORT,
154 1 << 1, (1 << 6) | (1 << 7));
156 msg_port_alt_clrsetbits(MSG_PORT_USB_AFE, USB2_COMPBG,
157 (1 << 8) | (1 << 9), (1 << 7) | (1 << 10));
159 msg_port_alt_setbits(MSG_PORT_USB_AFE, USB2_PLL2, 1 << 29);
161 msg_port_alt_setbits(MSG_PORT_USB_AFE, USB2_PLL1, 1 << 1);
163 msg_port_alt_clrsetbits(MSG_PORT_USB_AFE, USB2_PLL1,
164 (1 << 3) | (1 << 4) | (1 << 5), 1 << 6);
166 msg_port_alt_clrbits(MSG_PORT_USB_AFE, USB2_PLL2, 1 << 29);
168 msg_port_alt_setbits(MSG_PORT_USB_AFE, USB2_PLL2, 1 << 24);
171 static void quark_thermal_early_init(void)
173 /* The sequence below comes from Quark firmware writer guide */
175 /* thermal sensor mode config */
176 msg_port_alt_clrsetbits(MSG_PORT_SOC_UNIT, TS_CFG1,
177 (1 << 3) | (1 << 4) | (1 << 5), 1 << 5);
178 msg_port_alt_clrsetbits(MSG_PORT_SOC_UNIT, TS_CFG1,
179 (1 << 8) | (1 << 9) | (1 << 10) | (1 << 11) |
181 msg_port_alt_setbits(MSG_PORT_SOC_UNIT, TS_CFG1, 1 << 14);
182 msg_port_alt_clrbits(MSG_PORT_SOC_UNIT, TS_CFG1, 1 << 17);
183 msg_port_alt_clrbits(MSG_PORT_SOC_UNIT, TS_CFG1, 1 << 18);
184 msg_port_alt_clrsetbits(MSG_PORT_SOC_UNIT, TS_CFG2, 0xffff, 0x011f);
185 msg_port_alt_clrsetbits(MSG_PORT_SOC_UNIT, TS_CFG3, 0xff, 0x17);
186 msg_port_alt_clrsetbits(MSG_PORT_SOC_UNIT, TS_CFG3,
187 (1 << 8) | (1 << 9), 1 << 8);
188 msg_port_alt_clrbits(MSG_PORT_SOC_UNIT, TS_CFG3, 0xff000000);
189 msg_port_alt_clrsetbits(MSG_PORT_SOC_UNIT, TS_CFG4,
190 0x7ff800, 0xc8 << 11);
192 /* thermal monitor catastrophic trip set point (105 celsius) */
193 msg_port_clrsetbits(MSG_PORT_RMU, TS_TRIP, 0xff, 155);
195 /* thermal monitor catastrophic trip clear point (0 celsius) */
196 msg_port_clrsetbits(MSG_PORT_RMU, TS_TRIP, 0xff0000, 50 << 16);
198 /* take thermal sensor out of reset */
199 msg_port_alt_clrbits(MSG_PORT_SOC_UNIT, TS_CFG4, 1 << 0);
201 /* enable thermal monitor */
202 msg_port_setbits(MSG_PORT_RMU, TS_MODE, 1 << 15);
204 /* lock all thermal configuration */
205 msg_port_setbits(MSG_PORT_RMU, RMU_CTRL, (1 << 5) | (1 << 6));
208 static void quark_enable_legacy_seg(void)
210 msg_port_setbits(MSG_PORT_HOST_BRIDGE, HMISC2,
211 HMISC2_SEGE | HMISC2_SEGF | HMISC2_SEGAB);
214 int arch_cpu_init(void)
218 post_code(POST_CPU_INIT);
220 ret = x86_cpu_init_f();
225 * Quark SoC does not support MSR MTRRs. Fixed and variable range MTRRs
226 * are accessed indirectly via the message port and not the traditional
227 * MSR mechanism. Only UC, WT and WB cache types are supported.
232 * Quark SoC has some non-standard BARs (excluding PCI standard BARs)
233 * which need be initialized with suggested values
237 /* Initialize USB2 PHY */
238 quark_usb_early_init();
240 /* Initialize thermal sensor */
241 quark_thermal_early_init();
243 /* Turn on legacy segments (A/B/E/F) decode to system RAM */
244 quark_enable_legacy_seg();
249 int arch_cpu_init_dm(void)
252 * Initialize PCIe controller
254 * Quark SoC holds the PCIe controller in reset following a power on.
255 * U-Boot needs to release the PCIe controller from reset. The PCIe
256 * controller (D23:F0/F1) will not be visible in PCI configuration
257 * space and any access to its PCI configuration registers will cause
258 * system hang while it is held in reset.
260 quark_pcie_early_init();
270 int print_cpuinfo(void)
272 post_code(POST_CPU_INFO);
273 return default_print_cpuinfo();
276 static void quark_pcie_init(void)
280 /* PCIe upstream non-posted & posted request size */
281 qrk_pci_write_config_dword(QUARK_PCIE0, PCIE_RP_CCFG,
282 CCFG_UPRS | CCFG_UNRS);
283 qrk_pci_write_config_dword(QUARK_PCIE1, PCIE_RP_CCFG,
284 CCFG_UPRS | CCFG_UNRS);
286 /* PCIe packet fast transmit mode (IPF) */
287 qrk_pci_write_config_dword(QUARK_PCIE0, PCIE_RP_MPC2, MPC2_IPF);
288 qrk_pci_write_config_dword(QUARK_PCIE1, PCIE_RP_MPC2, MPC2_IPF);
290 /* PCIe message bus idle counter (SBIC) */
291 qrk_pci_read_config_dword(QUARK_PCIE0, PCIE_RP_MBC, &val);
293 qrk_pci_write_config_dword(QUARK_PCIE0, PCIE_RP_MBC, val);
294 qrk_pci_read_config_dword(QUARK_PCIE1, PCIE_RP_MBC, &val);
296 qrk_pci_write_config_dword(QUARK_PCIE1, PCIE_RP_MBC, val);
299 static void quark_usb_init(void)
303 /* Change USB EHCI packet buffer OUT/IN threshold */
304 qrk_pci_read_config_dword(QUARK_USB_EHCI, PCI_BASE_ADDRESS_0, &bar);
305 writel((0x7f << 16) | 0x7f, bar + EHCI_INSNREG01);
307 /* Disable USB device interrupts */
308 qrk_pci_read_config_dword(QUARK_USB_DEVICE, PCI_BASE_ADDRESS_0, &bar);
309 writel(0x7f, bar + USBD_INT_MASK);
310 writel((0xf << 16) | 0xf, bar + USBD_EP_INT_MASK);
311 writel((0xf << 16) | 0xf, bar + USBD_EP_INT_STS);
314 static void quark_irq_init(void)
316 struct quark_rcba *rcba;
319 qrk_pci_read_config_dword(QUARK_LEGACY_BRIDGE, LB_RCBA, &base);
321 rcba = (struct quark_rcba *)base;
324 * Route Quark PCI device interrupt pin to PIRQ
326 * Route device#23's INTA/B/C/D to PIRQA/B/C/D
327 * Route device#20,21's INTA/B/C/D to PIRQE/F/G/H
329 writew(PIRQC, &rcba->rmu_ir);
330 writew(PIRQA | (PIRQB << 4) | (PIRQC << 8) | (PIRQD << 12),
332 writew(PIRQD, &rcba->core_ir);
333 writew(PIRQE | (PIRQF << 4) | (PIRQG << 8) | (PIRQH << 12),
337 int arch_early_init_r(void)
348 int arch_misc_init(void)
350 #ifdef CONFIG_ENABLE_MRC_CACHE
352 * We intend not to check any return value here, as even MRC cache
353 * is not saved successfully, it is not a severe error that will
354 * prevent system from continuing to boot.
359 /* Assign a unique I/O APIC ID */
365 void board_final_cleanup(void)
367 struct quark_rcba *rcba;
370 qrk_pci_read_config_dword(QUARK_LEGACY_BRIDGE, LB_RCBA, &base);
372 rcba = (struct quark_rcba *)base;
374 /* Initialize 'Component ID' to zero */
375 val = readl(&rcba->esd);
377 writel(val, &rcba->esd);
379 /* Lock HMBOUND for security */
380 msg_port_setbits(MSG_PORT_HOST_BRIDGE, HM_BOUND, HM_BOUND_LOCK);