/*- * Copyright (c) 2005 Olivier Houchard. All rights reserved. * Copyright (c) 2010 Greg Ansley. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #define _ARM32_BUS_DMA_PRIVATE #include #include #include #include #include #include struct at91sam9_softc { device_t dev; bus_space_tag_t sc_st; bus_space_handle_t sc_sh; bus_space_handle_t sc_sys_sh; bus_space_handle_t sc_aic_sh; bus_space_handle_t sc_dbg_sh; bus_space_handle_t sc_matrix_sh; }; /* * Standard priority levels for the system. 0 is lowest and 7 is highest. * These values are the ones Atmel uses for its Linux port */ static const int at91_irq_prio[32] = { 7, /* Advanced Interrupt Controller */ 7, /* System Peripherals */ 1, /* Parallel IO Controller A */ 1, /* Parallel IO Controller B */ 1, /* Parallel IO Controller C */ 0, /* Analog-to-Digital Converter */ 5, /* USART 0 */ 5, /* USART 1 */ 5, /* USART 2 */ 0, /* Multimedia Card Interface */ 2, /* USB Device Port */ 6, /* Two-Wire Interface */ 5, /* Serial Peripheral Interface 0 */ 5, /* Serial Peripheral Interface 1 */ 5, /* Serial Synchronous Controller */ 0, /* (reserved) */ 0, /* (reserved) */ 0, /* Timer Counter 0 */ 0, /* Timer Counter 1 */ 0, /* Timer Counter 2 */ 2, /* USB Host port */ 3, /* Ethernet */ 0, /* Image Sensor Interface */ 5, /* USART 3 */ 5, /* USART 4 */ 5, /* USART 5 */ 0, /* Timer Counter 3 */ 0, /* Timer Counter 4 */ 0, /* Timer Counter 5 */ 0, /* Advanced Interrupt Controller IRQ0 */ 0, /* Advanced Interrupt Controller IRQ1 */ 0, /* Advanced Interrupt Controller IRQ2 */ }; #define DEVICE(_name, _id, _unit) \ { \ _name, _unit, \ AT91SAM9260_ ## _id ##_BASE, \ AT91SAM9260_ ## _id ## _SIZE, \ AT91SAM9260_IRQ_ ## _id \ } static const struct cpu_devs at91_devs[] = { DEVICE("at91_pmc", PMC, 0), DEVICE("at91_wdt", WDT, 0), DEVICE("at91_rst", RSTC, 0), DEVICE("at91_pit", PIT, 0), DEVICE("at91_pio", PIOA, 0), DEVICE("at91_pio", PIOB, 1), DEVICE("at91_pio", PIOC, 2), DEVICE("at91_twi", TWI, 0), DEVICE("at91_mci", MCI, 0), DEVICE("uart", DBGU, 0), DEVICE("uart", USART0, 1), DEVICE("uart", USART1, 2), DEVICE("uart", USART2, 3), DEVICE("uart", USART3, 4), DEVICE("uart", USART4, 5), DEVICE("uart", USART5, 6), DEVICE("spi", SPI0, 0), DEVICE("spi", SPI1, 1), DEVICE("ate", EMAC, 0), DEVICE("macb", EMAC, 0), DEVICE("nand", NAND, 0), DEVICE("ohci", OHCI, 0), { 0, 0, 0, 0, 0 } }; static void at91_add_child(device_t dev, int prio, const char *name, int unit, bus_addr_t addr, bus_size_t size, int irq0, int irq1, int irq2) { device_t kid; struct at91_ivar *ivar; kid = device_add_child_ordered(dev, prio, name, unit); if (kid == NULL) { printf("Can't add child %s%d ordered\n", name, unit); return; } ivar = malloc(sizeof(*ivar), M_DEVBUF, M_NOWAIT | M_ZERO); if (ivar == NULL) { device_delete_child(dev, kid); printf("Can't add alloc ivar\n"); return; } device_set_ivars(kid, ivar); resource_list_init(&ivar->resources); if (irq0 != -1) { bus_set_resource(kid, SYS_RES_IRQ, 0, irq0, 1); if (irq0 != AT91SAM9260_IRQ_SYSTEM) at91_pmc_clock_add(device_get_nameunit(kid), irq0, 0); } if (irq1 != 0) bus_set_resource(kid, SYS_RES_IRQ, 1, irq1, 1); if (irq2 != 0) bus_set_resource(kid, SYS_RES_IRQ, 2, irq2, 1); if (addr != 0 && addr < AT91SAM9260_BASE) addr += AT91SAM9260_BASE; if (addr != 0) bus_set_resource(kid, SYS_RES_MEMORY, 0, addr, size); } static void at91_cpu_add_builtin_children(device_t dev) { int i; const struct cpu_devs *walker; for (i = 1, walker = at91_devs; walker->name; i++, walker++) { at91_add_child(dev, i, walker->name, walker->unit, walker->mem_base, walker->mem_len, walker->irq0, walker->irq1, walker->irq2); } } static uint32_t at91_pll_outa(int freq) { if (freq > 195000000) return (0x20000000); else return (0x20008000); } static uint32_t at91_pll_outb(int freq) { return (0x4000); } static void at91_identify(driver_t *drv, device_t parent) { switch (AT91_CPU(at91_chip_id)) { case AT91_CPU_SAM9260: case AT91_CPU_SAM9XE128: case AT91_CPU_SAM9XE256: case AT91_CPU_SAM9XE512: at91_add_child(parent, 0, "at91sam9260", 0, 0, 0, -1, 0, 0); at91_cpu_add_builtin_children(parent); break; } } static int at91_probe(device_t dev) { const char *desc; switch (AT91_CPU(at91_chip_id)) { case AT91_CPU_SAM9260: desc = "AT91SAM9260"; break; case AT91_CPU_SAM9XE128: desc = "AT91SAM9XE128"; break; case AT91_CPU_SAM9XE256: desc = "AT91SAM9XE256"; break; case AT91_CPU_SAM9XE512: desc = "AT91SAM9XE512"; break; default: return (ENXIO); } device_set_desc(dev, desc); return (0); } static int at91_attach(device_t dev) { struct at91_pmc_clock *clk; struct at91sam9_softc *sc = device_get_softc(dev); int i; struct at91_softc *at91sc = device_get_softc(device_get_parent(dev)); sc->sc_st = at91sc->sc_st; sc->sc_sh = at91sc->sc_sh; sc->dev = dev; if (bus_space_subregion(sc->sc_st, sc->sc_sh, AT91SAM9260_SYS_BASE, AT91SAM9260_SYS_SIZE, &sc->sc_sys_sh) != 0) panic("Enable to map system registers"); if (bus_space_subregion(sc->sc_st, sc->sc_sh, AT91SAM9260_DBGU_BASE, AT91SAM9260_DBGU_SIZE, &sc->sc_dbg_sh) != 0) panic("Enable to map DBGU registers"); if (bus_space_subregion(sc->sc_st, sc->sc_sh, AT91SAM9260_AIC_BASE, AT91SAM9260_AIC_SIZE, &sc->sc_aic_sh) != 0) panic("Enable to map system registers"); /* XXX Hack to tell atmelarm about the AIC */ at91sc->sc_aic_sh = sc->sc_aic_sh; at91sc->sc_irq_system = AT91SAM9260_IRQ_SYSTEM; for (i = 0; i < 32; i++) { bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_SVR + i * 4, i); /* Priority. */ bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_SMR + i * 4, at91_irq_prio[i]); if (i < 8) bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_EOICR, 1); } bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_SPU, 32); /* No debug. */ bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_DCR, 0); /* Disable and clear all interrupts. */ bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_IDCR, 0xffffffff); bus_space_write_4(sc->sc_st, sc->sc_aic_sh, IC_ICCR, 0xffffffff); /* Disable all interrupts for DBGU */ bus_space_write_4(sc->sc_st, sc->sc_dbg_sh, 0x0c, 0xffffffff); if (bus_space_subregion(sc->sc_st, sc->sc_sh, AT91SAM9260_MATRIX_BASE, AT91SAM9260_MATRIX_SIZE, &sc->sc_matrix_sh) != 0) panic("Enable to map matrix registers"); /* activate NAND*/ i = bus_space_read_4(sc->sc_st, sc->sc_matrix_sh, AT91SAM9260_EBICSA); bus_space_write_4(sc->sc_st, sc->sc_matrix_sh, AT91SAM9260_EBICSA, i | AT91_MATRIX_EBI_CS3A_SMC_SMARTMEDIA); /* Update USB device port clock info */ clk = at91_pmc_clock_ref("udpck"); clk->pmc_mask = PMC_SCER_UDP_SAM9; at91_pmc_clock_deref(clk); /* Update USB host port clock info */ clk = at91_pmc_clock_ref("uhpck"); clk->pmc_mask = PMC_SCER_UHP_SAM9; at91_pmc_clock_deref(clk); /* Each SOC has different PLL contraints */ clk = at91_pmc_clock_ref("plla"); clk->pll_min_in = SAM9260_PLL_A_MIN_IN_FREQ; /* 1 MHz */ clk->pll_max_in = SAM9260_PLL_A_MAX_IN_FREQ; /* 32 MHz */ clk->pll_min_out = SAM9260_PLL_A_MIN_OUT_FREQ; /* 80 MHz */ clk->pll_max_out = SAM9260_PLL_A_MAX_OUT_FREQ; /* 240 MHz */ clk->pll_mul_shift = SAM9260_PLL_A_MUL_SHIFT; clk->pll_mul_mask = SAM9260_PLL_A_MUL_MASK; clk->pll_div_shift = SAM9260_PLL_A_DIV_SHIFT; clk->pll_div_mask = SAM9260_PLL_A_DIV_MASK; clk->set_outb = at91_pll_outa; at91_pmc_clock_deref(clk); /* * Fudge MAX pll in frequence down below 3.0 MHz to ensure * PMC alogrithm choose the divisor that causes the input clock * to be near the optimal 2 MHz per datasheet. We know * we are going to be using this for the USB clock at 96 MHz. * Causes no extra frequency deviation for all recomended crystal * values. */ clk = at91_pmc_clock_ref("pllb"); clk->pll_min_in = SAM9260_PLL_B_MIN_IN_FREQ; /* 1 MHz */ clk->pll_max_in = SAM9260_PLL_B_MAX_IN_FREQ; /* 5 MHz */ clk->pll_max_in = 2999999; /* ~3 MHz */ clk->pll_min_out = SAM9260_PLL_B_MIN_OUT_FREQ; /* 70 MHz */ clk->pll_max_out = SAM9260_PLL_B_MAX_OUT_FREQ; /* 130 MHz */ clk->pll_mul_shift = SAM9260_PLL_B_MUL_SHIFT; clk->pll_mul_mask = SAM9260_PLL_B_MUL_MASK; clk->pll_div_shift = SAM9260_PLL_B_DIV_SHIFT; clk->pll_div_mask = SAM9260_PLL_B_DIV_MASK; clk->set_outb = at91_pll_outb; at91_pmc_clock_deref(clk); return (0); } static device_method_t at91sam9260_methods[] = { DEVMETHOD(device_probe, at91_probe), DEVMETHOD(device_attach, at91_attach), DEVMETHOD(device_identify, at91_identify), DEVMETHOD_END }; static driver_t at91sam9260_driver = { "at91sam9260", at91sam9260_methods, sizeof(struct at91sam9_softc), }; static devclass_t at91sam9260_devclass; DRIVER_MODULE(at91sam9260, atmelarm, at91sam9260_driver, at91sam9260_devclass, NULL, NULL);