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Diffstat (limited to 'cpu/arm926ejs/mx27/generic.c')
| -rw-r--r-- | cpu/arm926ejs/mx27/generic.c | 335 |
1 files changed, 0 insertions, 335 deletions
diff --git a/cpu/arm926ejs/mx27/generic.c b/cpu/arm926ejs/mx27/generic.c deleted file mode 100644 index 30cf544..0000000 --- a/cpu/arm926ejs/mx27/generic.c +++ /dev/null @@ -1,335 +0,0 @@ -/* - * Copyright (c) 2008 Eric Jarrige <eric.jarrige@armadeus.org> - * Copyright (c) 2009 Ilya Yanok <yanok@emcraft.com> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -#include <common.h> -#include <div64.h> -#include <netdev.h> -#include <asm/io.h> -#include <asm/arch/imx-regs.h> -#ifdef CONFIG_MXC_MMC -#include <asm/arch/mxcmmc.h> -#endif - -/* - * get the system pll clock in Hz - * - * mfi + mfn / (mfd +1) - * f = 2 * f_ref * -------------------- - * pd + 1 - */ -unsigned int imx_decode_pll(unsigned int pll, unsigned int f_ref) -{ - unsigned int mfi = (pll >> 10) & 0xf; - unsigned int mfn = pll & 0x3ff; - unsigned int mfd = (pll >> 16) & 0x3ff; - unsigned int pd = (pll >> 26) & 0xf; - - mfi = mfi <= 5 ? 5 : mfi; - - return lldiv(2 * (u64)f_ref * (mfi * (mfd + 1) + mfn), - (mfd + 1) * (pd + 1)); -} - -static ulong clk_in_32k(void) -{ - return 1024 * CONFIG_MX27_CLK32; -} - -static ulong clk_in_26m(void) -{ - struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE; - - if (readl(&pll->cscr) & CSCR_OSC26M_DIV1P5) { - /* divide by 1.5 */ - return 26000000 * 2 / 3; - } else { - return 26000000; - } -} - -ulong imx_get_mpllclk(void) -{ - struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE; - ulong cscr = readl(&pll->cscr); - ulong fref; - - if (cscr & CSCR_MCU_SEL) - fref = clk_in_26m(); - else - fref = clk_in_32k(); - - return imx_decode_pll(readl(&pll->mpctl0), fref); -} - -ulong imx_get_armclk(void) -{ - struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE; - ulong cscr = readl(&pll->cscr); - ulong fref = imx_get_mpllclk(); - ulong div; - - if (!(cscr & CSCR_ARM_SRC_MPLL)) - fref = lldiv((fref * 2), 3); - - div = ((cscr >> 12) & 0x3) + 1; - - return lldiv(fref, div); -} - -ulong imx_get_ahbclk(void) -{ - struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE; - ulong cscr = readl(&pll->cscr); - ulong fref = imx_get_mpllclk(); - ulong div; - - div = ((cscr >> 8) & 0x3) + 1; - - return lldiv(fref * 2, 3 * div); -} - -ulong imx_get_spllclk(void) -{ - struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE; - ulong cscr = readl(&pll->cscr); - ulong fref; - - if (cscr & CSCR_SP_SEL) - fref = clk_in_26m(); - else - fref = clk_in_32k(); - - return imx_decode_pll(readl(&pll->spctl0), fref); -} - -static ulong imx_decode_perclk(ulong div) -{ - return lldiv((imx_get_mpllclk() * 2), (div * 3)); -} - -ulong imx_get_perclk1(void) -{ - struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE; - - return imx_decode_perclk((readl(&pll->pcdr1) & 0x3f) + 1); -} - -ulong imx_get_perclk2(void) -{ - struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE; - - return imx_decode_perclk(((readl(&pll->pcdr1) >> 8) & 0x3f) + 1); -} - -ulong imx_get_perclk3(void) -{ - struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE; - - return imx_decode_perclk(((readl(&pll->pcdr1) >> 16) & 0x3f) + 1); -} - -ulong imx_get_perclk4(void) -{ - struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE; - - return imx_decode_perclk(((readl(&pll->pcdr1) >> 24) & 0x3f) + 1); -} - -#if defined(CONFIG_DISPLAY_CPUINFO) -int print_cpuinfo (void) -{ - char buf[32]; - - printf("CPU: Freescale i.MX27 at %s MHz\n\n", - strmhz(buf, imx_get_mpllclk())); - return 0; -} -#endif - -int cpu_eth_init(bd_t *bis) -{ -#if defined(CONFIG_FEC_MXC) - struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE; - - /* enable FEC clock */ - writel(readl(&pll->pccr1) | PCCR1_HCLK_FEC, &pll->pccr1); - writel(readl(&pll->pccr0) | PCCR0_FEC_EN, &pll->pccr0); - return fecmxc_initialize(bis); -#else - return 0; -#endif -} - -/* - * Initializes on-chip MMC controllers. - * to override, implement board_mmc_init() - */ -int cpu_mmc_init(bd_t *bis) -{ -#ifdef CONFIG_MXC_MMC - return mxc_mmc_init(bis); -#else - return 0; -#endif -} - -void imx_gpio_mode(int gpio_mode) -{ - struct gpio_regs *regs = (struct gpio_regs *)IMX_GPIO_BASE; - unsigned int pin = gpio_mode & GPIO_PIN_MASK; - unsigned int port = (gpio_mode & GPIO_PORT_MASK) >> GPIO_PORT_SHIFT; - unsigned int ocr = (gpio_mode & GPIO_OCR_MASK) >> GPIO_OCR_SHIFT; - unsigned int aout = (gpio_mode & GPIO_AOUT_MASK) >> GPIO_AOUT_SHIFT; - unsigned int bout = (gpio_mode & GPIO_BOUT_MASK) >> GPIO_BOUT_SHIFT; - unsigned int tmp; - - /* Pullup enable */ - if (gpio_mode & GPIO_PUEN) { - writel(readl(®s->port[port].puen) | (1 << pin), - ®s->port[port].puen); - } else { - writel(readl(®s->port[port].puen) & ~(1 << pin), - ®s->port[port].puen); - } - - /* Data direction */ - if (gpio_mode & GPIO_OUT) { - writel(readl(®s->port[port].ddir) | 1 << pin, - ®s->port[port].ddir); - } else { - writel(readl(®s->port[port].ddir) & ~(1 << pin), - ®s->port[port].ddir); - } - - /* Primary / alternate function */ - if (gpio_mode & GPIO_AF) { - writel(readl(®s->port[port].gpr) | (1 << pin), - ®s->port[port].gpr); - } else { - writel(readl(®s->port[port].gpr) & ~(1 << pin), - ®s->port[port].gpr); - } - - /* use as gpio? */ - if (!(gpio_mode & (GPIO_PF | GPIO_AF))) { - writel(readl(®s->port[port].gius) | (1 << pin), - ®s->port[port].gius); - } else { - writel(readl(®s->port[port].gius) & ~(1 << pin), - ®s->port[port].gius); - } - - /* Output / input configuration */ - if (pin < 16) { - tmp = readl(®s->port[port].ocr1); - tmp &= ~(3 << (pin * 2)); - tmp |= (ocr << (pin * 2)); - writel(tmp, ®s->port[port].ocr1); - - writel(readl(®s->port[port].iconfa1) & ~(3 << (pin * 2)), - ®s->port[port].iconfa1); - writel(readl(®s->port[port].iconfa1) | aout << (pin * 2), - ®s->port[port].iconfa1); - writel(readl(®s->port[port].iconfb1) & ~(3 << (pin * 2)), - ®s->port[port].iconfb1); - writel(readl(®s->port[port].iconfb1) | bout << (pin * 2), - ®s->port[port].iconfb1); - } else { - pin -= 16; - - tmp = readl(®s->port[port].ocr2); - tmp &= ~(3 << (pin * 2)); - tmp |= (ocr << (pin * 2)); - writel(tmp, ®s->port[port].ocr2); - - writel(readl(®s->port[port].iconfa2) & ~(3 << (pin * 2)), - ®s->port[port].iconfa2); - writel(readl(®s->port[port].iconfa2) | aout << (pin * 2), - ®s->port[port].iconfa2); - writel(readl(®s->port[port].iconfb2) & ~(3 << (pin * 2)), - ®s->port[port].iconfb2); - writel(readl(®s->port[port].iconfb2) | bout << (pin * 2), - ®s->port[port].iconfb2); - } -} - -#ifdef CONFIG_MXC_UART -void mx27_uart_init_pins(void) -{ - int i; - unsigned int mode[] = { - PE12_PF_UART1_TXD, - PE13_PF_UART1_RXD, - }; - - for (i = 0; i < ARRAY_SIZE(mode); i++) - imx_gpio_mode(mode[i]); - -} -#endif /* CONFIG_MXC_UART */ - -#ifdef CONFIG_FEC_MXC -void mx27_fec_init_pins(void) -{ - int i; - unsigned int mode[] = { - PD0_AIN_FEC_TXD0, - PD1_AIN_FEC_TXD1, - PD2_AIN_FEC_TXD2, - PD3_AIN_FEC_TXD3, - PD4_AOUT_FEC_RX_ER, - PD5_AOUT_FEC_RXD1, - PD6_AOUT_FEC_RXD2, - PD7_AOUT_FEC_RXD3, - PD8_AF_FEC_MDIO, - PD9_AIN_FEC_MDC | GPIO_PUEN, - PD10_AOUT_FEC_CRS, - PD11_AOUT_FEC_TX_CLK, - PD12_AOUT_FEC_RXD0, - PD13_AOUT_FEC_RX_DV, - PD14_AOUT_FEC_CLR, - PD15_AOUT_FEC_COL, - PD16_AIN_FEC_TX_ER, - PF23_AIN_FEC_TX_EN, - }; - - for (i = 0; i < ARRAY_SIZE(mode); i++) - imx_gpio_mode(mode[i]); -} -#endif /* CONFIG_FEC_MXC */ - -#ifdef CONFIG_MXC_MMC -void mx27_sd2_init_pins(void) -{ - int i; - unsigned int mode[] = { - PB4_PF_SD2_D0, - PB5_PF_SD2_D1, - PB6_PF_SD2_D2, - PB7_PF_SD2_D3, - PB8_PF_SD2_CMD, - PB9_PF_SD2_CLK, - }; - - for (i = 0; i < ARRAY_SIZE(mode); i++) - imx_gpio_mode(mode[i]); - -} -#endif /* CONFIG_MXC_MMC */ |