2 * Copyright (c) 2015, Linaro Limited
5 * Redistribution and use in source and binary forms, with or without
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9 * this list of conditions and the following disclaimer.
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12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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29 #include <drivers/pl011.h>
31 #include <drivers/pl022_spi.h>
32 #include <drivers/pl061_gpio.h>
34 #include <hikey_peripherals.h>
37 #include <kernel/generic_boot.h>
38 #include <kernel/panic.h>
39 #include <kernel/pm_stubs.h>
40 #include <mm/tee_pager.h>
41 #include <mm/core_memprot.h>
42 #include <platform_config.h>
44 #include <tee/entry_std.h>
45 #include <tee/entry_fast.h>
47 static void main_fiq(void);
49 static const struct thread_handlers handlers = {
50 .std_smc = tee_entry_std,
51 .fast_smc = tee_entry_fast,
53 .cpu_on = cpu_on_handler,
54 .cpu_off = pm_do_nothing,
55 .cpu_suspend = pm_do_nothing,
56 .cpu_resume = pm_do_nothing,
57 .system_off = pm_do_nothing,
58 .system_reset = pm_do_nothing,
61 register_phys_mem(MEM_AREA_IO_NSEC, CONSOLE_UART_BASE, PL011_REG_SIZE);
62 register_phys_mem(MEM_AREA_IO_NSEC, PMUSSI_BASE, PMUSSI_REG_SIZE);
64 register_phys_mem(MEM_AREA_IO_NSEC, PERI_BASE, PERI_BASE_REG_SIZE);
65 register_phys_mem(MEM_AREA_IO_NSEC, PMX0_BASE, PMX0_REG_SIZE);
66 register_phys_mem(MEM_AREA_IO_NSEC, PMX1_BASE, PMX1_REG_SIZE);
67 register_phys_mem(MEM_AREA_IO_NSEC, GPIO6_BASE, PL061_REG_SIZE);
68 register_phys_mem(MEM_AREA_IO_NSEC, SPI_BASE, PL022_REG_SIZE);
71 const struct thread_handlers *generic_boot_get_handlers(void)
76 static void main_fiq(void)
81 static vaddr_t console_base(void)
85 if (cpu_mmu_enabled()) {
87 va = phys_to_virt(CONSOLE_UART_BASE, MEM_AREA_IO_NSEC);
90 return CONSOLE_UART_BASE;
93 void console_init(void)
95 pl011_init(console_base(), CONSOLE_UART_CLK_IN_HZ, CONSOLE_BAUDRATE);
98 void console_putc(int ch)
100 vaddr_t base = console_base();
103 pl011_putc('\r', base);
104 pl011_putc(ch, base);
107 void console_flush(void)
109 pl011_flush(console_base());
112 vaddr_t nsec_periph_base(paddr_t pa)
114 if (cpu_mmu_enabled())
115 return (vaddr_t)phys_to_virt(pa, MEM_AREA_IO_NSEC);
122 uint32_t shifted_val, read_val;
123 vaddr_t peri_base = nsec_periph_base(PERI_BASE);
124 vaddr_t pmx0_base = nsec_periph_base(PMX0_BASE);
125 vaddr_t pmx1_base = nsec_periph_base(PMX1_BASE);
127 DMSG("take SPI0 out of reset\n");
128 shifted_val = PERI_RST3_SSP;
130 * no need to read PERI_SC_PERIPH_RSTDIS3 first
131 * as all the bits are processed and cleared after writing
133 write32(shifted_val, peri_base + PERI_SC_PERIPH_RSTDIS3);
134 DMSG("PERI_SC_PERIPH_RSTDIS3: 0x%x\n",
135 read32(peri_base + PERI_SC_PERIPH_RSTDIS3));
138 * wait until the requested device is out of reset
139 * and ready to be used
142 read_val = read32(peri_base + PERI_SC_PERIPH_RSTSTAT3);
143 } while (read_val & shifted_val);
144 DMSG("PERI_SC_PERIPH_RSTSTAT3: 0x%x\n", read_val);
146 DMSG("enable SPI clock\n");
148 * no need to read PERI_SC_PERIPH_CLKEN3 first
149 * as all the bits are processed and cleared after writing
151 shifted_val = PERI_CLK3_SSP;
152 write32(shifted_val, peri_base + PERI_SC_PERIPH_CLKEN3);
153 DMSG("PERI_SC_PERIPH_CLKEN3: 0x%x\n",
154 read32(peri_base + PERI_SC_PERIPH_CLKEN3));
156 DMSG("PERI_SC_PERIPH_CLKSTAT3: 0x%x\n",
157 read32(peri_base + PERI_SC_PERIPH_CLKSTAT3));
160 * GPIO6_2 can be configured as PINMUX_GPIO, but as PINMUX_SPI, HW IP
161 * will control the chip select pin so we don't have to manually do it.
162 * The only concern is that the IP will pulse it between each packet,
163 * which might not work with certain clients. There seems to be no
164 * option to configure it to stay enabled for the total duration of the
166 * ref: http://infocenter.arm.com/help/topic/com.arm.doc.ddi0194h/CJACFAFG.html
168 DMSG("configure gpio6 pins 0-3 as SPI\n");
169 write32(PINMUX_SPI, pmx0_base + PMX0_IOMG104);
170 write32(PINMUX_SPI, pmx0_base + PMX0_IOMG105);
171 write32(PINMUX_SPI, pmx0_base + PMX0_IOMG106);
172 write32(PINMUX_SPI, pmx0_base + PMX0_IOMG107);
174 DMSG("configure gpio6 pins 0-3 as nopull\n");
175 write32(PINCFG_NOPULL, pmx1_base + PMX1_IOCG104);
176 write32(PINCFG_NOPULL, pmx1_base + PMX1_IOCG105);
177 write32(PINCFG_NOPULL, pmx1_base + PMX1_IOCG106);
178 write32(PINCFG_NOPULL, pmx1_base + PMX1_IOCG107);
186 static TEE_Result peripherals_init(void)
188 vaddr_t pmussi_base = nsec_periph_base(PMUSSI_BASE);
190 DMSG("enable LD021_1V8 source (pin 35) on LS connector\n");
192 * Mezzanine cards usually use this to source level shifters for
193 * UART, GPIO, SPI, I2C, etc so if not enabled, connected
194 * peripherals will not work either (during bootloader stage)
195 * until linux is booted.
197 io_mask8(pmussi_base + PMUSSI_LDO21_REG_ADJ, PMUSSI_LDO21_REG_VL_1V8,
198 PMUSSI_LDO21_REG_VL_MASK);
199 write8(PMUSSI_ENA_LDO21, pmussi_base + PMUSSI_ENA_LDO17_22);
207 driver_init(peripherals_init);