From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marek Vasut Date: Mon, 14 Nov 2011 11:45:13 +0100 Subject: [U-Boot] [PATCH 2/6] i.mx: Add the initial support for freescale i.MX6Q processor In-Reply-To: References: <1321094190-8108-1-git-send-email-jason.hui@linaro.org> <201111140011.55220.marek.vasut@gmail.com> Message-ID: <201111141145.13909.marek.vasut@gmail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de > On Mon, Nov 14, 2011 at 7:11 AM, Marek Vasut wrote: > >> i.MX6Q is freescale quad core processors with ARM cortex_a9 complex. > >> This patch is to add the initial support for this processor. > >> > >> Signed-off-by: Jason Liu > >> --- > >> arch/arm/cpu/armv7/mx6/Makefile | 48 + > >> arch/arm/cpu/armv7/mx6/clock.c | 388 +++++++ > >> arch/arm/cpu/armv7/mx6/iomux-v3.c | 76 ++ > >> arch/arm/cpu/armv7/mx6/lowlevel_init.S | 60 + > >> arch/arm/cpu/armv7/mx6/soc.c | 57 + > >> arch/arm/include/asm/arch-mx6/ccm_regs.h | 894 +++++++++++++++ > >> arch/arm/include/asm/arch-mx6/clock.h | 50 + > >> arch/arm/include/asm/arch-mx6/gpio.h | 35 + > >> arch/arm/include/asm/arch-mx6/imx-regs.h | 233 ++++ > >> arch/arm/include/asm/arch-mx6/iomux-v3.h | 104 ++ > >> arch/arm/include/asm/arch-mx6/mx6x_pins.h | 1683 > >> +++++++++++++++++++++++++++++ arch/arm/include/asm/arch-mx6/sys_proto.h > >> | 38 + > >> 12 files changed, 3666 insertions(+), 0 deletions(-) > > > > [...] > > > >> diff --git a/arch/arm/cpu/armv7/mx6/lowlevel_init.S > >> b/arch/arm/cpu/armv7/mx6/lowlevel_init.S new file mode 100644 > >> index 0000000..7a03f59 > >> --- /dev/null > >> +++ b/arch/arm/cpu/armv7/mx6/lowlevel_init.S > >> @@ -0,0 +1,60 @@ > >> +/* > >> + * Copyright (C) 2010-2011 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 > >> +#include > >> + > >> +/* > >> + * AIPS setup - Only setup MPROTx registers. > >> + * Set all MPROTx to be non-bufferable, > >> + * trusted for R/W, not forced to user-mode. > >> + * The PACR default values are good. > >> + */ > >> +.macro init_aips > >> + ldr r0, =AIPS1_ON_BASE_ADDR > >> + ldr r1, =0x77777777 > >> + str r1, [r0, #0x0] > >> + str r1, [r0, #0x4] > >> + ldr r1, =0x0 > >> + str r1, [r0, #0x40] > >> + str r1, [r0, #0x44] > >> + str r1, [r0, #0x48] > >> + str r1, [r0, #0x4C] > >> + str r1, [r0, #0x50] > >> + > >> + ldr r0, =AIPS2_ON_BASE_ADDR > >> + ldr r1, =0x77777777 > >> + str r1, [r0, #0x0] > >> + str r1, [r0, #0x4] > >> + ldr r1, =0x0 > >> + str r1, [r0, #0x40] > >> + str r1, [r0, #0x44] > >> + str r1, [r0, #0x48] > >> + str r1, [r0, #0x4C] > >> + str r1, [r0, #0x50] > >> +.endm /* init_aips */ > > > > Can't this be done in C code? Why the assembly ? > > I think this should be initialized as early as possible, so I put it here. As early as arch_cpu_init is late (see arch/arm/lib/board.c)? > > >> + > >> +.section ".text.init", "x" > >> + > >> +.globl lowlevel_init > >> +lowlevel_init: > >> + > >> + init_aips > >> + > >> + mov pc, lr > > > > [...] > > > >> +#define MXC_CCM_CSCMR2_CAN_CLK_SEL_OFFSET (2) > > > > Drop parenthesis around stuff similar to this. > > Yes, thanks. > > >> +#endif /*__ARCH_ARM_MACH_MX6_CCM_REGS_H__ */ > >> diff --git a/arch/arm/include/asm/arch-mx6/clock.h > >> b/arch/arm/include/asm/arch-mx6/clock.h new file mode 100644 > >> index 0000000..636458f > >> --- /dev/null > >> +++ b/arch/arm/include/asm/arch-mx6/clock.h > >> @@ -0,0 +1,50 @@ > >> +/* > >> + * (C) Copyright 2009 > >> + * Stefano Babic, DENX Software Engineering, sbabic at denx.de. > >> + * > >> + * 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 > >> + */ > >> + > >> +#ifndef __ASM_ARCH_CLOCK_H > >> +#define __ASM_ARCH_CLOCK_H > >> + > >> +enum mxc_clock { > >> + MXC_ARM_CLK = 0, > >> + MXC_PER_CLK, > >> + MXC_AHB_CLK, > >> + MXC_IPG_CLK, > >> + MXC_IPG_PERCLK, > >> + MXC_UART_CLK, > >> + MXC_CSPI_CLK, > >> + MXC_AXI_CLK, > >> + MXC_EMI_SLOW_CLK, > >> + MXC_DDR_CLK, > >> + MXC_ESDHC_CLK, > >> + MXC_ESDHC2_CLK, > >> + MXC_ESDHC3_CLK, > >> + MXC_ESDHC4_CLK, > >> + MXC_SATA_CLK, > >> + MXC_NFC_CLK, > >> +}; > >> + > >> +u32 imx_get_uartclk(void); > >> +u32 imx_get_fecclk(void); > >> +unsigned int mxc_get_clock(enum mxc_clock clk); > >> + > >> +#endif /* __ASM_ARCH_CLOCK_H */ > >> diff --git a/arch/arm/include/asm/arch-mx6/gpio.h > >> b/arch/arm/include/asm/arch-mx6/gpio.h new file mode 100644 > >> index 0000000..1dc34e9 > >> --- /dev/null > >> +++ b/arch/arm/include/asm/arch-mx6/gpio.h > >> @@ -0,0 +1,35 @@ > >> +/* > >> + * Copyright (C) 2011 > >> + * Stefano Babic, DENX Software Engineering, > >> + * > >> + * 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 > >> + */ > >> + > >> > >> +/* GPIO registers */ > >> +struct gpio_regs { > >> + u32 gpio_dr; > >> + u32 gpio_dir; > >> + u32 gpio_psr; > >> +}; > >> + > > > > You'll have GPIO driver, so why expose this structure ? > > yes, we already had drivers/gpio/mxc_gpio.c driver. In this driver, we will > use this structure. And it's the same as i.mx5 before. So why do you need to expose the structure, isn't it internal to the driver? > > Jason Liu > > >> +#endif > > > > M