diff options
Diffstat (limited to 'cpu/arm1136/mx35')
| -rw-r--r-- | cpu/arm1136/mx35/Makefile | 47 | ||||
| -rw-r--r-- | cpu/arm1136/mx35/crm_regs.h | 258 | ||||
| -rw-r--r-- | cpu/arm1136/mx35/generic.c | 205 | ||||
| -rw-r--r-- | cpu/arm1136/mx35/interrupts.c | 110 | ||||
| -rw-r--r-- | cpu/arm1136/mx35/iomux.c | 149 | ||||
| -rw-r--r-- | cpu/arm1136/mx35/serial.c | 220 |
6 files changed, 989 insertions, 0 deletions
diff --git a/cpu/arm1136/mx35/Makefile b/cpu/arm1136/mx35/Makefile new file mode 100644 index 0000000..e83cbf7 --- /dev/null +++ b/cpu/arm1136/mx35/Makefile @@ -0,0 +1,47 @@ +# +# (C) Copyright 2000-2006 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# (C) Copyright 2008-2009 Freescale Semiconductor, Inc. +# +# See file CREDITS for list of people who contributed to this +# project. +# +# 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 $(TOPDIR)/config.mk + +LIB = $(obj)lib$(SOC).a + +COBJS = interrupts.o serial.o generic.o iomux.o + +SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) +OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS)) + +all: $(obj).depend $(LIB) + +$(LIB): $(OBJS) + $(AR) $(ARFLAGS) $@ $(OBJS) + +######################################################################### + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +######################################################################### diff --git a/cpu/arm1136/mx35/crm_regs.h b/cpu/arm1136/mx35/crm_regs.h new file mode 100644 index 0000000..082fdc6 --- /dev/null +++ b/cpu/arm1136/mx35/crm_regs.h @@ -0,0 +1,258 @@ +/* + * Copyright 2004-2009 Freescale Semiconductor, Inc. All Rights Reserved. + */ + +/* + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ +#ifndef __CPU_ARM1136_MX35_CRM_REGS_H__ +#define __CPU_ARM1136_MX35_CRM_REGS_H__ + +/* Register bit definitions */ +#define MXC_CCM_CCMR_WFI (1 << 30) +#define MXC_CCM_CCMR_STBY_EXIT_SRC (1 << 29) +#define MXC_CCM_CCMR_VSTBY (1 << 28) +#define MXC_CCM_CCMR_WBEN (1 << 27) +#define MXC_CCM_CCMR_VOL_RDY_CNT_OFFSET 20 +#define MXC_CCM_CCMR_VOL_RDY_CNT_MASK (0xF << 20) +#define MXC_CCM_CCMR_ROMW_OFFSET 18 +#define MXC_CCM_CCMR_ROMW_MASK (0x3 << 18) +#define MXC_CCM_CCMR_RAMW_OFFSET 21 +#define MXC_CCM_CCMR_RAMW_MASK (0x3 << 21) +#define MXC_CCM_CCMR_LPM_OFFSET 14 +#define MXC_CCM_CCMR_LPM_MASK (0x3 << 14) +#define MXC_CCM_CCMR_UPE (1 << 9) +#define MXC_CCM_CCMR_MPE (1 << 3) + +#define MXC_CCM_PDR0_PER_SEL (1 << 26) +#define MXC_CCM_PDR0_IPU_HND_BYP (1 << 23) +#define MXC_CCM_PDR0_HSP_PODF_OFFSET 20 +#define MXC_CCM_PDR0_HSP_PODF_MASK (0x3 << 20) +#define MXC_CCM_PDR0_CON_MUX_DIV_OFFSET 16 +#define MXC_CCM_PDR0_CON_MUX_DIV_MASK (0xF << 16) +#define MXC_CCM_PDR0_CKIL_SEL (1 << 15) +#define MXC_CCM_PDR0_PER_PODF_OFFSET 12 +#define MXC_CCM_PDR0_PER_PODF_MASK (0xF << 12) +#define MXC_CCM_PDR0_AUTO_MUX_DIV_OFFSET 9 +#define MXC_CCM_PDR0_AUTO_MUX_DIV_MASK (0x7 << 9) +#define MXC_CCM_PDR0_AUTO_CON 0x1 + +#define MXC_CCM_PDR1_MSHC_PRDF_OFFSET 28 +#define MXC_CCM_PDR1_MSHC_PRDF_MASK (0x7 << 28) +#define MXC_CCM_PDR1_MSHC_PODF_OFFSET 22 +#define MXC_CCM_PDR1_MSHC_PODF_MASK (0x3F << 22) +#define MXC_CCM_PDR1_MSHC_M_U (1 << 7) + +#define MXC_CCM_PDR2_SSI2_PRDF_OFFSET 27 +#define MXC_CCM_PDR2_SSI2_PRDF_MASK (0x7 << 27) +#define MXC_CCM_PDR2_SSI1_PRDF_OFFSET 24 +#define MXC_CCM_PDR2_SSI1_PRDF_MASK (0x7 << 24) +#define MXC_CCM_PDR2_CSI_PRDF_OFFSET 19 +#define MXC_CCM_PDR2_CSI_PRDF_MASK (0x7 << 19) +#define MXC_CCM_PDR2_CSI_PODF_OFFSET 16 +#define MXC_CCM_PDR2_CSI_PODF_MASK (0x7 << 16) +#define MXC_CCM_PDR2_SSI2_PODF_OFFSET 8 +#define MXC_CCM_PDR2_SSI2_PODF_MASK (0x3F << 8) +#define MXC_CCM_PDR2_CSI_M_U (1 << 7) +#define MXC_CCM_PDR2_SSI_M_U (1 << 6) +#define MXC_CCM_PDR2_SSI1_PODF_OFFSET 0 +#define MXC_CCM_PDR2_SSI1_PODF_MASK (0x3F) + +#define MXC_CCM_PDR3_SPDIF_PRDF_OFFSET 29 +#define MXC_CCM_PDR3_SPDIF_PRDF_MASK (0x7 << 29) +#define MXC_CCM_PDR3_SPDIF_PODF_OFFSET 23 +#define MXC_CCM_PDR3_SPDIF_PODF_MASK (0x3F << 23) +#define MXC_CCM_PDR3_SPDIF_M_U (1 << 22) +#define MXC_CCM_PDR3_ESDHC3_PRDF_OFFSET 19 +#define MXC_CCM_PDR3_ESDHC3_PRDF_MASK (0x7 << 19) +#define MXC_CCM_PDR3_ESDHC3_PODF_OFFSET 16 +#define MXC_CCM_PDR3_ESDHC3_PODF_MASK (0x7 << 16) +#define MXC_CCM_PDR3_UART_M_U (1 << 15) +#define MXC_CCM_PDR3_ESDHC2_PRDF_OFFSET 11 +#define MXC_CCM_PDR3_ESDHC2_PRDF_MASK (0x7 << 11) +#define MXC_CCM_PDR3_ESDHC2_PODF_OFFSET 8 +#define MXC_CCM_PDR3_ESDHC2_PODF_MASK (0x7 << 8) +#define MXC_CCM_PDR3_ESDHC_M_U (1 << 6) +#define MXC_CCM_PDR3_ESDHC1_PRDF_OFFSET 3 +#define MXC_CCM_PDR3_ESDHC1_PRDF_MASK (0x7 << 3) +#define MXC_CCM_PDR3_ESDHC1_PODF_OFFSET 0 +#define MXC_CCM_PDR3_ESDHC1_PODF_MASK (0x7) + +#define MXC_CCM_PDR4_NFC_PODF_OFFSET 28 +#define MXC_CCM_PDR4_NFC_PODF_MASK (0xF << 28) +#define MXC_CCM_PDR4_USB_PRDF_OFFSET 25 +#define MXC_CCM_PDR4_USB_PRDF_MASK (0x7 << 25) +#define MXC_CCM_PDR4_USB_PODF_OFFSET 22 +#define MXC_CCM_PDR4_USB_PODF_MASK (0x7 << 22) +#define MXC_CCM_PDR4_PER0_PRDF_OFFSET 19 +#define MXC_CCM_PDR4_PER0_PRDF_MASK (0x7 << 19) +#define MXC_CCM_PDR4_PER0_PODF_OFFSET 16 +#define MXC_CCM_PDR4_PER0_PODF_MASK (0x7 << 16) +#define MXC_CCM_PDR4_UART_PRDF_OFFSET 13 +#define MXC_CCM_PDR4_UART_PRDF_MASK (0x7 << 13) +#define MXC_CCM_PDR4_UART_PODF_OFFSET 10 +#define MXC_CCM_PDR4_UART_PODF_MASK (0x7 << 10) +#define MXC_CCM_PDR4_USB_M_U (1 << 9) + +/* Bit definitions for RCSR */ +#define MXC_CCM_RCSR_BUS_WIDTH (1 << 29) +#define MXC_CCM_RCSR_BUS_16BIT (1 << 29) +#define MXC_CCM_RCSR_PAGE_SIZE (3 << 27) +#define MXC_CCM_RCSR_PAGE_512 (0 << 27) +#define MXC_CCM_RCSR_PAGE_2K (1 << 27) +#define MXC_CCM_RCSR_PAGE_4K1 (2 << 27) +#define MXC_CCM_RCSR_PAGE_4K2 (3 << 27) +#define MXC_CCM_RCSR_SOFT_RESET (1 << 15) +#define MXC_CCM_RCSR_NF16B (1 << 14) +#define MXC_CCM_RCSR_NFC_4K (1 << 9) +#define MXC_CCM_RCSR_NFC_FMS (1 << 8) + +/* Bit definitions for both MCU, PERIPHERAL PLL control registers */ +#define MXC_CCM_PCTL_BRM 0x80000000 +#define MXC_CCM_PCTL_PD_OFFSET 26 +#define MXC_CCM_PCTL_PD_MASK (0xF << 26) +#define MXC_CCM_PCTL_MFD_OFFSET 16 +#define MXC_CCM_PCTL_MFD_MASK (0x3FF << 16) +#define MXC_CCM_PCTL_MFI_OFFSET 10 +#define MXC_CCM_PCTL_MFI_MASK (0xF << 10) +#define MXC_CCM_PCTL_MFN_OFFSET 0 +#define MXC_CCM_PCTL_MFN_MASK 0x3FF + +/* Bit definitions for Audio clock mux register*/ +#define MXC_CCM_ACMR_ESAI_CLK_SEL_OFFSET 12 +#define MXC_CCM_ACMR_ESAI_CLK_SEL_MASK (0xF << 12) +#define MXC_CCM_ACMR_SPDIF_CLK_SEL_OFFSET 8 +#define MXC_CCM_ACMR_SPDIF_CLK_SEL_MASK (0xF << 8) +#define MXC_CCM_ACMR_SSI1_CLK_SEL_OFFSET 4 +#define MXC_CCM_ACMR_SSI1_CLK_SEL_MASK (0xF << 4) +#define MXC_CCM_ACMR_SSI2_CLK_SEL_OFFSET 0 +#define MXC_CCM_ACMR_SSI2_CLK_SEL_MASK (0xF << 0) + +/* Bit definitions for Clock gating Register*/ +#define MXC_CCM_CGR0_ASRC_OFFSET 0 +#define MXC_CCM_CGR0_ASRC_MASK (0x3 << 0) +#define MXC_CCM_CGR0_ATA_OFFSET 2 +#define MXC_CCM_CGR0_ATA_MASK (0x3 << 2) +#define MXC_CCM_CGR0_CAN1_OFFSET 6 +#define MXC_CCM_CGR0_CAN1_MASK (0x3 << 6) +#define MXC_CCM_CGR0_CAN2_OFFSET 8 +#define MXC_CCM_CGR0_CAN2_MASK (0x3 << 8) +#define MXC_CCM_CGR0_CSPI1_OFFSET 10 +#define MXC_CCM_CGR0_CSPI1_MASK (0x3 << 10) +#define MXC_CCM_CGR0_CSPI2_OFFSET 12 +#define MXC_CCM_CGR0_CSPI2_MASK (0x3 << 12) +#define MXC_CCM_CGR0_ECT_OFFSET 14 +#define MXC_CCM_CGR0_ECT_MASK (0x3 << 14) +#define MXC_CCM_CGR0_EMI_OFFSET 18 +#define MXC_CCM_CGR0_EMI_MASK (0x3 << 18) +#define MXC_CCM_CGR0_EPIT1_OFFSET 20 +#define MXC_CCM_CGR0_EPIT1_MASK (0x3 << 20) +#define MXC_CCM_CGR0_EPIT2_OFFSET 22 +#define MXC_CCM_CGR0_EPIT2_MASK (0x3 << 22) +#define MXC_CCM_CGR0_ESAI_OFFSET 24 +#define MXC_CCM_CGR0_ESAI_MASK (0x3 << 24) +#define MXC_CCM_CGR0_ESDHC1_OFFSET 26 +#define MXC_CCM_CGR0_ESDHC1_MASK (0x3 << 26) +#define MXC_CCM_CGR0_ESDHC2_OFFSET 28 +#define MXC_CCM_CGR0_ESDHC2_MASK (0x3 << 28) +#define MXC_CCM_CGR0_ESDHC3_OFFSET 30 +#define MXC_CCM_CGR0_ESDHC3_MASK (0x3 << 30) + +#define MXC_CCM_CGR1_FEC_OFFSET 0 +#define MXC_CCM_CGR1_FEC_MASK (0x3 << 0) +#define MXC_CCM_CGR1_GPIO1_OFFSET 2 +#define MXC_CCM_CGR1_GPIO1_MASK (0x3 << 2) +#define MXC_CCM_CGR1_GPIO2_OFFSET 4 +#define MXC_CCM_CGR1_GPIO2_MASK (0x3 << 4) +#define MXC_CCM_CGR1_GPIO3_OFFSET 6 +#define MXC_CCM_CGR1_GPIO3_MASK (0x3 << 6) +#define MXC_CCM_CGR1_GPT_OFFSET 8 +#define MXC_CCM_CGR1_GPT_MASK (0x3 << 8) +#define MXC_CCM_CGR1_I2C1_OFFSET 10 +#define MXC_CCM_CGR1_I2C1_MASK (0x3 << 10) +#define MXC_CCM_CGR1_I2C2_OFFSET 12 +#define MXC_CCM_CGR1_I2C2_MASK (0x3 << 12) +#define MXC_CCM_CGR1_I2C3_OFFSET 14 +#define MXC_CCM_CGR1_I2C3_MASK (0x3 << 14) +#define MXC_CCM_CGR1_IOMUXC_OFFSET 16 +#define MXC_CCM_CGR1_IOMUXC_MASK (0x3 << 16) +#define MXC_CCM_CGR1_IPU_OFFSET 18 +#define MXC_CCM_CGR1_IPU_MASK (0x3 << 18) +#define MXC_CCM_CGR1_KPP_OFFSET 20 +#define MXC_CCM_CGR1_KPP_MASK (0x3 << 20) +#define MXC_CCM_CGR1_MLB_OFFSET 22 +#define MXC_CCM_CGR1_MLB_MASK (0x3 << 22) +#define MXC_CCM_CGR1_MSHC_OFFSET 24 +#define MXC_CCM_CGR1_MSHC_MASK (0x3 << 24) +#define MXC_CCM_CGR1_OWIRE_OFFSET 26 +#define MXC_CCM_CGR1_OWIRE_MASK (0x3 << 26) +#define MXC_CCM_CGR1_PWM_OFFSET 28 +#define MXC_CCM_CGR1_PWM_MASK (0x3 << 28) +#define MXC_CCM_CGR1_RNGC_OFFSET 30 +#define MXC_CCM_CGR1_RNGC_MASK (0x3 << 30) + +#define MXC_CCM_CGR2_RTC_OFFSET 0 +#define MXC_CCM_CGR2_RTC_MASK (0x3 << 0) +#define MXC_CCM_CGR2_RTIC_OFFSET 2 +#define MXC_CCM_CGR2_RTIC_MASK (0x3 << 2) +#define MXC_CCM_CGR2_SCC_OFFSET 4 +#define MXC_CCM_CGR2_SCC_MASK (0x3 << 4) +#define MXC_CCM_CGR2_SDMA_OFFSET 6 +#define MXC_CCM_CGR2_SDMA_MASK (0x3 << 6) +#define MXC_CCM_CGR2_SPBA_OFFSET 8 +#define MXC_CCM_CGR2_SPBA_MASK (0x3 << 8) +#define MXC_CCM_CGR2_SPDIF_OFFSET 10 +#define MXC_CCM_CGR2_SPDIF_MASK (0x3 << 10) +#define MXC_CCM_CGR2_SSI1_OFFSET 12 +#define MXC_CCM_CGR2_SSI1_MASK (0x3 << 12) +#define MXC_CCM_CGR2_SSI2_OFFSET 14 +#define MXC_CCM_CGR2_SSI2_MASK (0x3 << 14) +#define MXC_CCM_CGR2_UART1_OFFSET 16 +#define MXC_CCM_CGR2_UART1_MASK (0x3 << 16) +#define MXC_CCM_CGR2_UART2_OFFSET 18 +#define MXC_CCM_CGR2_UART2_MASK (0x3 << 18) +#define MXC_CCM_CGR2_UART3_OFFSET 20 +#define MXC_CCM_CGR2_UART3_MASK (0x3 << 20) +#define MXC_CCM_CGR2_USBOTG_OFFSET 22 +#define MXC_CCM_CGR2_USBOTG_MASK (0x3 << 22) +#define MXC_CCM_CGR2_WDOG_OFFSET 24 +#define MXC_CCM_CGR2_WDOG_MASK (0x3 << 24) +#define MXC_CCM_CGR2_MAX_OFFSET 26 +#define MXC_CCM_CGR2_MAX_MASK (0x3 << 26) +#define MXC_CCM_CGR2_MAX_ENABLE (0x2 << 26) +#define MXC_CCM_CGR2_AUDMUX_OFFSET 30 +#define MXC_CCM_CGR2_AUDMUX_MASK (0x3 << 30) + +#define MXC_CCM_CGR3_CSI_OFFSET 0 +#define MXC_CCM_CGR3_CSI_MASK (0x3 << 0) +#define MXC_CCM_CGR3_IIM_OFFSET 2 +#define MXC_CCM_CGR3_IIM_MASK (0x3 << 2) +#define MXC_CCM_CGR3_GPU2D_OFFSET 4 +#define MXC_CCM_CGR3_GPU2D_MASK (0x3 << 4) + +#define MXC_CCM_COSR_CLKOSEL_MASK 0x1F +#define MXC_CCM_COSR_CLKOSEL_OFFSET 0 +#define MXC_CCM_COSR_CLKOEN (1 << 5) +#define MXC_CCM_COSR_CLKOUTDIV_1 (1 << 6) +#define MXC_CCM_COSR_CLKOUT_PREDIV_MASK (0x7 << 10) +#define MXC_CCM_COSR_CLKOUT_PREDIV_OFFSET 10 +#define MXC_CCM_COSR_CLKOUT_PRODIV_MASK (0x7 << 13) +#define MXC_CCM_COSR_CLKOUT_PRODIV_OFFSET 13 +#define MXC_CCM_COSR_SSI1_RX_SRC_SEL_MASK (0x3 << 16) +#define MXC_CCM_COSR_SSI1_RX_SRC_SEL_OFFSET 16 +#define MXC_CCM_COSR_SSI1_TX_SRC_SEL_MASK (0x3 << 18) +#define MXC_CCM_COSR_SSI1_TX_SRC_SEL_OFFSET 18 +#define MXC_CCM_COSR_SSI2_RX_SRC_SEL_MASK (0x3 << 20) +#define MXC_CCM_COSR_SSI2_RX_SRC_SEL_OFFSET 20 +#define MXC_CCM_COSR_SSI2_TX_SRC_SEL_MASK (0x3 << 22) +#define MXC_CCM_COSR_SSI2_TX_SRC_SEL_OFFSET 22 +#define MXC_CCM_COSR_ASRC_AUDIO_EN (1 << 24) +#define MXC_CCM_COSR_ASRC_AUDIO_PODF_MASK (0x3F << 26) +#define MXC_CCM_COSR_ASRC_AUDIO_PODF_OFFSET 26 + +#endif /* __CPU_ARM1136_MX35_CRM_REGS_H__ */ diff --git a/cpu/arm1136/mx35/generic.c b/cpu/arm1136/mx35/generic.c new file mode 100644 index 0000000..d6ad6d7 --- /dev/null +++ b/cpu/arm1136/mx35/generic.c @@ -0,0 +1,205 @@ +/* + * (C) Copyright 2007 + * Sascha Hauer, Pengutronix + * + * (C) Copyright 2008-2009 Freescale Semiconductor, Inc. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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 <asm/arch/mx35.h> +#include "crm_regs.h" + +#define CLK_CODE(arm, ahb, sel) (((arm) << 16) + ((ahb) << 8) + (sel)) +#define CLK_CODE_ARM(c) (((c) >> 16) & 0xFF) +#define CLK_CODE_AHB(c) (((c) >> 8) & 0xFF) +#define CLK_CODE_PATH(c) ((c) & 0xFF) + +#define CCM_GET_DIVIDER(x, m, o) (((x) & (m)) >> (o)) + +static int g_clk_mux_auto[8] = { + CLK_CODE(1, 3, 0), CLK_CODE(1, 2, 1), CLK_CODE(2, 1, 1), -1, + CLK_CODE(1, 6, 0), CLK_CODE(1, 4, 1), CLK_CODE(2, 2, 1), -1, +}; + +static int g_clk_mux_consumer[16] = { + CLK_CODE(1, 4, 0), CLK_CODE(1, 3, 1), CLK_CODE(1, 3, 1), -1, + -1, -1, CLK_CODE(4, 1, 0), CLK_CODE(1, 5, 0), + CLK_CODE(1, 8, 1), CLK_CODE(1, 6, 1), CLK_CODE(2, 4, 0), -1, + -1, -1, CLK_CODE(4, 2, 0), -1, +}; + +static u32 __get_arm_div(u32 pdr0, u32 *fi, u32 *fd) +{ + int *pclk_mux; + if (pdr0 & MXC_CCM_PDR0_AUTO_CON) { + pclk_mux = g_clk_mux_consumer + + ((pdr0 & MXC_CCM_PDR0_CON_MUX_DIV_MASK) >> + MXC_CCM_PDR0_CON_MUX_DIV_OFFSET); + } else { + pclk_mux = g_clk_mux_auto + + ((pdr0 & MXC_CCM_PDR0_AUTO_MUX_DIV_MASK) >> + MXC_CCM_PDR0_AUTO_MUX_DIV_OFFSET); + } + + if ((*pclk_mux) == -1) + return -1; + + if (fi && fd) { + if (!CLK_CODE_PATH(*pclk_mux)) { + *fi = *fd = 1; + return CLK_CODE_ARM(*pclk_mux); + } + if (pdr0 & MXC_CCM_PDR0_AUTO_CON) { + *fi = 3; + *fd = 4; + } else { + *fi = 2; + *fd = 3; + } + } + return CLK_CODE_ARM(*pclk_mux); +} + +static int __get_ahb_div(u32 pdr0) +{ + int *pclk_mux; + if (pdr0 & MXC_CCM_PDR0_AUTO_CON) { + pclk_mux = g_clk_mux_consumer + + ((pdr0 & MXC_CCM_PDR0_CON_MUX_DIV_MASK) >> + MXC_CCM_PDR0_CON_MUX_DIV_OFFSET); + } else { + pclk_mux = g_clk_mux_auto + + ((pdr0 & MXC_CCM_PDR0_AUTO_MUX_DIV_MASK) >> + MXC_CCM_PDR0_AUTO_MUX_DIV_OFFSET); + } + + if ((*pclk_mux) == -1) + return -1; + + return CLK_CODE_AHB(*pclk_mux); +} + +static u32 __decode_pll(u32 reg, u32 infreq) +{ + u32 mfi = (reg >> 10) & 0xf; + u32 mfn = reg & 0x3f; + u32 mfd = (reg >> 16) & 0x3f; + u32 pd = (reg >> 26) & 0xf; + + mfi = mfi <= 5 ? 5 : mfi; + mfd += 1; + pd += 1; + + return ((2 * (infreq / 1000) * (mfi * mfd + mfn)) / (mfd * pd)) * 1000; +} + +static u32 __get_mcu_main_clk(void) +{ + u32 arm_div, fi, fd; + arm_div = __get_arm_div(__REG(CCM_BASE_ADDR + CLKCTL_PDR0), &fi, &fd); + fi *= + __decode_pll(__REG(CCM_BASE_ADDR + CLKCTL_MPCTL), + CONFIG_MX35_HCLK_FREQ); + return fi / (arm_div * fd); +} + +static u32 __get_ipg_clk(void) +{ + u32 freq = __get_mcu_main_clk(); + u32 pdr0 = __REG(CCM_BASE_ADDR + CLKCTL_PDR0); + + return freq / (__get_ahb_div(pdr0) * 2); +} + +static u32 __get_ipg_per_clk(void) +{ + u32 freq = __get_mcu_main_clk(); + u32 pdr0 = __REG(CCM_BASE_ADDR + CLKCTL_PDR0); + u32 pdr4 = __REG(CCM_BASE_ADDR + CLKCTL_PDR4); + u32 div; + if (pdr0 & MXC_CCM_PDR0_PER_SEL) { + div = (CCM_GET_DIVIDER(pdr4, + MXC_CCM_PDR4_PER0_PRDF_MASK, + MXC_CCM_PDR4_PER0_PODF_OFFSET) + 1) * + (CCM_GET_DIVIDER(pdr4, + MXC_CCM_PDR4_PER0_PODF_MASK, + MXC_CCM_PDR4_PER0_PODF_OFFSET) + 1); + } else { + div = CCM_GET_DIVIDER(pdr0, + MXC_CCM_PDR0_PER_PODF_MASK, + MXC_CCM_PDR0_PER_PODF_OFFSET) + 1; + freq /= __get_ahb_div(pdr0); + } + return freq / div; +} + +static u32 __get_uart_clk(void) +{ + u32 freq; + u32 pdr4 = __REG(CCM_BASE_ADDR + CLKCTL_PDR4); + + if (__REG(CCM_BASE_ADDR + CLKCTL_PDR3) & MXC_CCM_PDR3_UART_M_U) + freq = __get_mcu_main_clk(); + else + freq = __decode_pll(__REG(CCM_BASE_ADDR + CLKCTL_PPCTL), + CONFIG_MX35_HCLK_FREQ); + freq /= ((CCM_GET_DIVIDER(pdr4, + MXC_CCM_PDR4_UART_PRDF_MASK, + MXC_CCM_PDR4_UART_PRDF_OFFSET) + 1) * + (CCM_GET_DIVIDER(pdr4, + MXC_CCM_PDR4_UART_PODF_MASK, + MXC_CCM_PDR4_UART_PODF_OFFSET) + 1)); + return freq; +} + +unsigned int mxc_get_clock(enum mxc_clock clk) +{ + switch (clk) { + case MXC_ARM_CLK: + return __get_mcu_main_clk(); + case MXC_AHB_CLK: + break; + case MXC_IPG_CLK: + return __get_ipg_clk(); + case MXC_IPG_PERCLK: + return __get_ipg_per_clk(); + case MXC_UART_CLK: + return __get_uart_clk(); + } + return -1; +} + +void mxc_dump_clocks(void) +{ + u32 cpufreq = __get_mcu_main_clk(); + printf("mx35 cpu clock: %dMHz\n", cpufreq / 1000000); + printf("ipg clock : %dHz\n", __get_ipg_clk()); + printf("uart clock : %dHz\n", mxc_get_clock(MXC_UART_CLK)); +} + +#if defined(CONFIG_DISPLAY_CPUINFO) +int print_cpuinfo(void) +{ + printf("CPU: Freescale i.MX35 at %d MHz\n", + __get_mcu_main_clk() / 1000000); + return 0; +} +#endif diff --git a/cpu/arm1136/mx35/interrupts.c b/cpu/arm1136/mx35/interrupts.c new file mode 100644 index 0000000..28284b1 --- /dev/null +++ b/cpu/arm1136/mx35/interrupts.c @@ -0,0 +1,110 @@ +/* + * (C) Copyright 2007 + * Sascha Hauer, Pengutronix + * + * (C) Copyright 2008-2009 Freescale Semiconductor, Inc. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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 <asm/arch/mx35.h> + +/* General purpose timers registers */ +#define GPTCR __REG(GPT1_BASE_ADDR) /* Control register */ +#define GPTPR __REG(GPT1_BASE_ADDR + 0x4) /* Prescaler register */ +#define GPTSR __REG(GPT1_BASE_ADDR + 0x8) /* Status register */ +#define GPTCNT __REG(GPT1_BASE_ADDR + 0x24) /* Counter register */ + +/* General purpose timers bitfields */ +#define GPTCR_SWR (1<<15) /* Software reset */ +#define GPTCR_FRR (1<<9) /* Freerun / restart */ +#define GPTCR_CLKSOURCE_32 (4<<6) /* Clock source */ +#define GPTCR_TEN (1) /* Timer enable */ + +/* nothing really to do with interrupts, just starts up a counter. */ +int interrupt_init(void) +{ + int i; + + /* setup GP Timer 1 */ + GPTCR = GPTCR_SWR; + for (i = 0; i < 100; i++) + GPTCR = 0; /* We have no udelay by now */ + GPTPR = 0; /* 32Khz */ + /* Freerun Mode, PERCLK1 input */ + GPTCR |= GPTCR_CLKSOURCE_32 | GPTCR_TEN; + + return 0; +} + +void reset_timer_masked(void) +{ + GPTCR = 0; + /* Freerun Mode, PERCLK1 input */ + GPTCR = GPTCR_CLKSOURCE_32 | GPTCR_TEN; +} + +ulong get_timer_masked(void) +{ + ulong val = GPTCNT; + return val; +} + +ulong get_timer(ulong base) +{ + return get_timer_masked() - base; +} + +void set_timer(ulong t) +{ +} + +/* delay x useconds AND perserve advance timstamp value */ +void udelay(unsigned long usec) +{ + ulong tmo, tmp; + + /* if "big" number, spread normalization to seconds */ + if (usec >= 1000) { + /* start to normalize for usec to ticks per sec */ + tmo = usec / 1000; + /* find number of "ticks" to wait to achieve target */ + tmo *= CONFIG_SYS_HZ; + tmo /= 1000; /* finish normalize. */ + } else {/* else small number, don't kill it prior to HZ multiply */ + tmo = usec * CONFIG_SYS_HZ; + tmo /= (1000 * 1000); + } + + tmp = get_timer(0); /* get current timestamp */ + /* if setting this forward will roll time stamp */ + if ((tmo + tmp + 1) < tmp) + /* reset "advancing" timestamp to 0, set lastinc value */ + reset_timer_masked(); + else /* else, set advancing stamp wake up time */ + tmo += tmp; + while (get_timer_masked() < tmo) /* loop till event */ + /*NOP*/; +} + +void reset_cpu(ulong addr) +{ + __REG16(WDOG_BASE_ADDR) = 4; +} diff --git a/cpu/arm1136/mx35/iomux.c b/cpu/arm1136/mx35/iomux.c new file mode 100644 index 0000000..e66332c --- /dev/null +++ b/cpu/arm1136/mx35/iomux.c @@ -0,0 +1,149 @@ +/* + * Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved. + */ + +/* + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +/*! + * @defgroup GPIO_MX35 Board GPIO and Muxing Setup + * @ingroup MSL_MX35 + */ +/*! + * @file mach-mx35/iomux.c + * + * @brief I/O Muxing control functions + * + * @ingroup GPIO_MX35 + */ +#include <common.h> +#include <asm/arch/mx35.h> +#include <asm/arch/mx35_pins.h> +#include <asm/arch/iomux.h> + +/*! + * IOMUX register (base) addresses + */ +enum iomux_reg_addr { + IOMUXGPR = IOMUXC_BASE_ADDR, + /*!< General purpose */ + IOMUXSW_MUX_CTL = IOMUXC_BASE_ADDR + 4, + /*!< MUX control */ + IOMUXSW_MUX_END = IOMUXC_BASE_ADDR + 0x324, + /*!< last MUX control register */ + IOMUXSW_PAD_CTL = IOMUXC_BASE_ADDR + 0x328, + /*!< Pad control */ + IOMUXSW_PAD_END = IOMUXC_BASE_ADDR + 0x794, + /*!< last Pad control register */ + IOMUXSW_INPUT_CTL = IOMUXC_BASE_ADDR + 0x7AC, + /*!< input select register */ + IOMUXSW_INPUT_END = IOMUXC_BASE_ADDR + 0x9F4, + /*!< last input select register */ +}; + +#define MUX_PIN_NUM_MAX \ + (((IOMUXSW_PAD_END - IOMUXSW_PAD_CTL) >> 2) + 1) +#define MUX_INPUT_NUM_MUX \ + (((IOMUXSW_INPUT_END - IOMUXSW_INPUT_CTL) >> 2) + 1) + +#define PIN_TO_IOMUX_INDEX(pin) ((PIN_TO_IOMUX_PAD(pin) - 0x328) >> 2) + +/*! + * This function is used to configure a pin through the IOMUX module. + * FIXED ME: for backward compatible. Will be static function! + * @param pin a pin number as defined in \b #iomux_pin_name_t + * @param cfg an output function as defined in \b #iomux_pin_cfg_t + * + * @return 0 if successful; Non-zero otherwise + */ +static int iomux_config_mux(iomux_pin_name_t pin, iomux_pin_cfg_t cfg) +{ + u32 mux_reg = PIN_TO_IOMUX_MUX(pin); + + if (mux_reg != NON_MUX_I) { + mux_reg += IOMUXGPR; + __REG(mux_reg) = cfg; + } + + return 0; +} + +/*! + * Request ownership for an IO pin. This function has to be the first one + * being called before that pin is used. The caller has to check the + * return value to make sure it returns 0. + * + * @param pin a name defined by \b iomux_pin_name_t + * @param cfg an input function as defined in \b #iomux_pin_cfg_t + * + * @return 0 if successful; Non-zero otherwise + */ +int mxc_request_iomux(iomux_pin_name_t pin, iomux_pin_cfg_t cfg) +{ + int ret = iomux_config_mux(pin, cfg); + return ret; +} + +/*! + * Release ownership for an IO pin + * + * @param pin a name defined by \b iomux_pin_name_t + * @param cfg an input function as defined in \b #iomux_pin_cfg_t + */ +void mxc_free_iomux(iomux_pin_name_t pin, iomux_pin_cfg_t cfg) +{ +} + +/*! + * This function configures the pad value for a IOMUX pin. + * + * @param pin a pin number as defined in \b #iomux_pin_name_t + * @param config the ORed value of elements defined in \b #iomux_pad_config_t + */ +void mxc_iomux_set_pad(iomux_pin_name_t pin, u32 config) +{ + u32 pad_reg = IOMUXGPR + PIN_TO_IOMUX_PAD(pin); + + __REG(pad_reg) = config; +} + +/*! + * This function enables/disables the general purpose function for a particular + * signal. + * + * @param gp one signal as defined in \b #iomux_gp_func_t + * @param en \b #true to enable; \b #false to disable + */ +void mxc_iomux_set_gpr(iomux_gp_func_t gp, int en) +{ + u32 l; + + l = __REG(IOMUXGPR); + if (en) + l |= gp; + else + l &= ~gp; + + __REG(IOMUXGPR) = l; +} + +/*! + * This function configures input path. + * + * @param input index of input select register as defined in \b + * #iomux_input_select_t + * @param config the binary value of elements defined in \b + * #iomux_input_config_t + */ +void mxc_iomux_set_input(iomux_input_select_t input, u32 config) +{ + u32 reg = IOMUXSW_INPUT_CTL + (input << 2); + + __REG(reg) = config; +} diff --git a/cpu/arm1136/mx35/serial.c b/cpu/arm1136/mx35/serial.c new file mode 100644 index 0000000..f4f674a --- /dev/null +++ b/cpu/arm1136/mx35/serial.c @@ -0,0 +1,220 @@ +/* + * (c) 2007 Sascha Hauer <s.hauer@pengutronix.de> + * + * (C) Copyright 2008-2009 Freescale Semiconductor, Inc. + * + * 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> + +#if defined CONFIG_MX35_UART + +#include <asm/arch/mx35.h> + +#define __REG(x) (*((volatile u32 *)(x))) + +#define UART_PHYS CONFIG_MX35_UART + +/* Register definitions */ +#define URXD 0x0 /* Receiver Register */ +#define UTXD 0x40 /* Transmitter Register */ +#define UCR1 0x80 /* Control Register 1 */ +#define UCR2 0x84 /* Control Register 2 */ +#define UCR3 0x88 /* Control Register 3 */ +#define UCR4 0x8c /* Control Register 4 */ +#define UFCR 0x90 /* FIFO Control Register */ +#define USR1 0x94 /* Status Register 1 */ +#define USR2 0x98 /* Status Register 2 */ +#define UESC 0x9c /* Escape Character Register */ +#define UTIM 0xa0 /* Escape Timer Register */ +#define UBIR 0xa4 /* BRM Incremental Register */ +#define UBMR 0xa8 /* BRM Modulator Register */ +#define UBRC 0xac /* Baud Rate Count Register */ +#define UTS 0xb4 /* UART Test Register (mx31) */ + +/* UART Control Register Bit Fields.*/ +#define URXD_CHARRDY (1<<15) +#define URXD_ERR (1<<14) +#define URXD_OVRRUN (1<<13) +#define URXD_FRMERR (1<<12) +#define URXD_BRK (1<<11) +#define URXD_PRERR (1<<10) +#define UCR1_ADEN (1<<15) /* Auto dectect interrupt */ +#define UCR1_ADBR (1<<14) /* Auto detect baud rate */ +#define UCR1_TRDYEN (1<<13) /* Transmitter ready interrupt enable */ +#define UCR1_IDEN (1<<12) /* Idle condition interrupt */ +#define UCR1_RRDYEN (1<<9) /* Recv ready interrupt enable */ +#define UCR1_RDMAEN (1<<8) /* Recv ready DMA enable */ +#define UCR1_IREN (1<<7) /* Infrared interface enable */ +#define UCR1_TXMPTYEN (1<<6) /* Transimitter empty interrupt enable */ +#define UCR1_RTSDEN (1<<5) /* RTS delta interrupt enable */ +#define UCR1_SNDBRK (1<<4) /* Send break */ +#define UCR1_TDMAEN (1<<3) /* Transmitter ready DMA enable */ +#define UCR1_UARTCLKEN (1<<2) /* UART clock enabled */ +#define UCR1_DOZE (1<<1) /* Doze */ +#define UCR1_UARTEN (1<<0) /* UART enabled */ +#define UCR2_ESCI (1<<15) /* Escape seq interrupt enable */ +#define UCR2_IRTS (1<<14) /* Ignore RTS pin */ +#define UCR2_CTSC (1<<13) /* CTS pin control */ +#define UCR2_CTS (1<<12) /* Clear to send */ +#define UCR2_ESCEN (1<<11) /* Escape enable */ +#define UCR2_PREN (1<<8) /* Parity enable */ +#define UCR2_PROE (1<<7) /* Parity odd/even */ +#define UCR2_STPB (1<<6) /* Stop */ +#define UCR2_WS (1<<5) /* Word size */ +#define UCR2_RTSEN (1<<4) /* Request to send interrupt enable */ +#define UCR2_TXEN (1<<2) /* Transmitter enabled */ +#define UCR2_RXEN (1<<1) /* Receiver enabled */ +#define UCR2_SRST (1<<0) /* SW reset */ +#define UCR3_DTREN (1<<13) /* DTR interrupt enable */ +#define UCR3_PARERREN (1<<12) /* Parity enable */ +#define UCR3_FRAERREN (1<<11) /* Frame error interrupt enable */ +#define UCR3_DSR (1<<10) /* Data set ready */ +#define UCR3_DCD (1<<9) /* Data carrier detect */ +#define UCR3_RI (1<<8) /* Ring indicator */ +#define UCR3_TIMEOUTEN (1<<7) /* Timeout interrupt enable */ +#define UCR3_RXDSEN (1<<6) /* Receive status interrupt enable */ +#define UCR3_AIRINTEN (1<<5) /* Async IR wake interrupt enable */ +#define UCR3_AWAKEN (1<<4) /* Async wake interrupt enable */ +#define UCR3_REF25 (1<<3) /* Ref freq 25 MHz */ +#define UCR3_REF30 (1<<2) /* Ref Freq 30 MHz */ +#define UCR3_INVT (1<<1) /* Inverted Infrared transmission */ +#define UCR3_BPEN (1<<0) /* Preset registers enable */ +#define UCR4_CTSTL_32 (32<<10) /* CTS trigger level (32 chars) */ +#define UCR4_INVR (1<<9) /* Inverted infrared reception */ +#define UCR4_ENIRI (1<<8) /* Serial infrared interrupt enable */ +#define UCR4_WKEN (1<<7) /* Wake interrupt enable */ +#define UCR4_REF16 (1<<6) /* Ref freq 16 MHz */ +#define UCR4_IRSC (1<<5) /* IR special case */ +#define UCR4_TCEN (1<<3) /* Transmit complete interrupt enable */ +#define UCR4_BKEN (1<<2) /* Break condition interrupt enable */ +#define UCR4_OREN (1<<1) /* Receiver overrun interrupt enable */ +#define UCR4_DREN (1<<0) /* Recv data ready interrupt enable */ +#define UFCR_RXTL_SHF 0 /* Receiver trigger level shift */ +#define UFCR_RFDIV (7<<7) /* Reference freq divider mask */ +#define UFCR_TXTL_SHF 10 /* Transmitter trigger level shift */ +#define USR1_PARITYERR (1<<15) /* Parity error interrupt flag */ +#define USR1_RTSS (1<<14) /* RTS pin status */ +#define USR1_TRDY (1<<13)/* Transmitter ready interrupt/dma flag */ +#define USR1_RTSD (1<<12) /* RTS delta */ +#define USR1_ESCF (1<<11) /* Escape seq interrupt flag */ +#define USR1_FRAMERR (1<<10) /* Frame error interrupt flag */ +#define USR1_RRDY (1<<9) /* Receiver ready interrupt/dma flag */ +#define USR1_TIMEOUT (1<<7) /* Receive timeout interrupt status */ +#define USR1_RXDS (1<<6) /* Receiver idle interrupt flag */ +#define USR1_AIRINT (1<<5) /* Async IR wake interrupt flag */ +#define USR1_AWAKE (1<<4) /* Aysnc wake interrupt flag */ +#define USR2_ADET (1<<15) /* Auto baud rate detect complete */ +#define USR2_TXFE (1<<14) /* Transmit buffer FIFO empty */ +#define USR2_DTRF (1<<13) /* DTR edge interrupt flag */ +#define USR2_IDLE (1<<12) /* Idle condition */ +#define USR2_IRINT (1<<8) /* Serial infrared interrupt flag */ +#define USR2_WAKE (1<<7) /* Wake */ +#define USR2_RTSF (1<<4) /* RTS edge interrupt flag */ +#define USR2_TXDC (1<<3) /* Transmitter complete */ +#define USR2_BRCD (1<<2) /* Break condition */ +#define USR2_ORE (1<<1) /* Overrun error */ +#define USR2_RDR (1<<0) /* Recv data ready */ +#define UTS_FRCPERR (1<<13) /* Force parity error */ +#define UTS_LOOP (1<<12) /* Loop tx and rx */ +#define UTS_TXEMPTY (1<<6) /* TxFIFO empty */ +#define UTS_RXEMPTY (1<<5) /* RxFIFO empty */ +#define UTS_TXFULL (1<<4) /* TxFIFO full */ +#define UTS_RXFULL (1<<3) /* RxFIFO full */ +#define UTS_SOFTRST (1<<0) /* Software reset */ + +DECLARE_GLOBAL_DATA_PTR; + +void serial_setbrg(void) +{ + u32 clk = mxc_get_clock(MXC_UART_CLK); + + if (!gd->baudrate) + gd->baudrate = CONFIG_BAUDRATE; + __REG(UART_PHYS + UFCR) = 0x4 << 7; /* divide input clock by 2 */ + __REG(UART_PHYS + UBIR) = 0xf; + __REG(UART_PHYS + UBMR) = clk / (2 * gd->baudrate); +} + +int serial_getc(void) +{ + while (__REG(UART_PHYS + UTS) & UTS_RXEMPTY) + ; + return __REG(UART_PHYS + URXD); +} + +void serial_putc(const char c) +{ + __REG(UART_PHYS + UTXD) = c; + + /* wait for transmitter to be ready */ + while (!(__REG(UART_PHYS + UTS) & UTS_TXEMPTY)) + ; + + /* If \n, also do \r */ + if (c == '\n') + serial_putc('\r'); +} + +/* + * Test whether a character is in the RX buffer + */ +int serial_tstc(void) +{ + /* If receive fifo is empty, return false */ + if (__REG(UART_PHYS + UTS) & UTS_RXEMPTY) + return 0; + return 1; +} + +void serial_puts(const char *s) +{ + while (*s) + serial_putc(*s++); +} + +/* + * Initialise the serial port with the given baudrate. The settings + * are always 8 data bits, no parity, 1 stop bit, no start bits. + * + */ +int serial_init(void) +{ + __REG(UART_PHYS + UCR1) = 0x0; + __REG(UART_PHYS + UCR2) = 0x0; + + while (!(__REG(UART_PHYS + UCR2) & UCR2_SRST)) + ; + + __REG(UART_PHYS + UCR3) = 0x0704; + __REG(UART_PHYS + UCR4) = 0x8000; + __REG(UART_PHYS + UESC) = 0x002b; + __REG(UART_PHYS + UTIM) = 0x0; + + __REG(UART_PHYS + UTS) = 0x0; + + serial_setbrg(); + + __REG(UART_PHYS + UCR2) = + UCR2_WS | UCR2_IRTS | UCR2_RXEN | UCR2_TXEN | UCR2_SRST; + + __REG(UART_PHYS + UCR1) = UCR1_UARTEN; + + return 0; +} + +#endif /* CONFIG_MX35 */ |