--- /dev/null
+#
+# Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.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 "as is" WITHOUT ANY WARRANTY of any
+# kind, whether express or implied; without even the implied warranty
+# of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+
+include $(TOPDIR)/config.mk
+
+LIB = $(obj)lib$(SOC).o
+
+SOBJS := lowlevel_init.o
+
+COBJS += sys_info.o
+
+SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS := $(addprefix $(obj),$(COBJS) $(COBJS-y) $(SOBJS))
+
+all: $(obj).depend $(LIB)
+
+$(LIB): $(OBJS)
+ $(call cmd_link_o_target, $(OBJS))
+
+clean:
+ rm -f $(SOBJS) $(OBJS)
+
+distclean: clean
+ rm -f $(LIB) core *.bak .depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
--- /dev/null
+/*
+ * lowlevel_init.S
+ *
+ * AM33XX low level initialization.
+ *
+ * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
+ *
+ * Initial Code by:
+ * Mansoor Ahamed <mansoor.ahamed@ti.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 "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <config.h>
+#include <asm/arch/hardware.h>
+
+_mark1:
+ .word mark1
+_lowlevel_init1:
+ .word lowlevel_init
+_s_init_start:
+ .word s_init_start
+
+_TEXT_BASE:
+ .word CONFIG_SYS_TEXT_BASE /* sdram load addr from config.mk */
+
+/*****************************************************************************
+ * lowlevel_init: - Platform low level init.
+ ****************************************************************************/
+.globl lowlevel_init
+lowlevel_init:
+
+ /* The link register is saved in ip by start.S */
+ mov r6, ip
+ /* check if we are already running from RAM */
+ ldr r2, _lowlevel_init1
+ ldr r3, _TEXT_BASE
+ sub r4, r2, r3
+ sub r0, pc, r4
+ ldr sp, SRAM_STACK
+mark1:
+ ldr r5, _mark1
+ sub r5, r5, r2 /* bytes between mark1 and lowlevel_init */
+ sub r0, r0, r5 /* r0 <- _start w.r.t current place of execution */
+ mov r10, #0x0 /* r10 has in_ddr used by s_init() */
+
+ ands r0, r0, #0xC0000000
+ /* MSB 2 bits <> 0 then we are in ocmc or DDR */
+ cmp r0, #0x80000000
+ bne s_init_start
+ mov r10, #0x01
+ b s_init_start
+
+s_init_start:
+ mov r0, r10 /* passing in_ddr in r0 */
+ bl s_init
+ /* back to arch calling code */
+ mov pc, r6
+ /* the literal pools origin */
+ .ltorg
+
+SRAM_STACK:
+ /* Place stack at the top */
+ .word LOW_LEVEL_SRAM_STACK
--- /dev/null
+/*
+ * sys_info.c
+ *
+ * System information functions
+ *
+ * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
+ *
+ * Derived from Beagle Board and 3430 SDP code by
+ * Richard Woodruff <r-woodruff2@ti.com>
+ * Syed Mohammed Khasim <khasim@ti.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.
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/clock.h>
+
+struct ctrl_stat *cstat = (struct ctrl_stat *)CTRL_BASE;
+
+/**
+ * get_cpu_rev(void) - extract rev info
+ */
+u32 get_cpu_rev(void)
+{
+ u32 id;
+ u32 rev;
+
+ id = readl(DEVICE_ID);
+ rev = (id >> 28) & 0xff;
+
+ return rev;
+}
+
+/**
+ * get_cpu_type(void) - extract cpu info
+ */
+u32 get_cpu_type(void)
+{
+ u32 id = 0;
+ u32 partnum;
+
+ id = readl(DEVICE_ID);
+ partnum = (id >> 12) & 0xffff;
+
+ return partnum;
+}
+
+/**
+ * get_board_rev() - setup to pass kernel board revision information
+ * returns:(bit[0-3] sub version, higher bit[7-4] is higher version)
+ */
+u32 get_board_rev(void)
+{
+ return BOARD_REV_ID;
+}
+
+/**
+ * get_device_type(): tell if GP/HS/EMU/TST
+ */
+u32 get_device_type(void)
+{
+ int mode;
+ mode = readl(&cstat->statusreg) & (DEVICE_MASK);
+ return mode >>= 8;
+}
+
+/**
+ * get_sysboot_value(void) - return SYS_BOOT[4:0]
+ */
+u32 get_sysboot_value(void)
+{
+ int mode;
+ mode = readl(&cstat->statusreg) & (SYSBOOT_MASK);
+ return mode;
+}
+
+#ifdef CONFIG_DISPLAY_CPUINFO
+/**
+ * Print CPU information
+ */
+int print_cpuinfo(void)
+{
+ char *cpu_s, *sec_s;
+ int arm_freq, ddr_freq;
+
+ switch (get_cpu_type()) {
+ case AM335X:
+ cpu_s = "AM335X";
+ break;
+ default:
+ cpu_s = "Unknown cpu type";
+ break;
+ }
+
+ switch (get_device_type()) {
+ case TST_DEVICE:
+ sec_s = "TST";
+ break;
+ case EMU_DEVICE:
+ sec_s = "EMU";
+ break;
+ case HS_DEVICE:
+ sec_s = "HS";
+ break;
+ case GP_DEVICE:
+ sec_s = "GP";
+ break;
+ default:
+ sec_s = "?";
+ }
+
+ printf("AM%s-%s rev %d\n",
+ cpu_s, sec_s, get_cpu_rev());
+
+ /* TODO: Print ARM and DDR frequencies */
+
+ return 0;
+}
+#endif /* CONFIG_DISPLAY_CPUINFO */
--- /dev/null
+/*
+ * cpu.h
+ *
+ * AM33xx specific header file
+ *
+ * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.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.
+ */
+
+#ifndef _AM33XX_CPU_H
+#define _AM33XX_CPU_H
+
+#if !(defined(__KERNEL_STRICT_NAMES) || defined(__ASSEMBLY__))
+#include <asm/types.h>
+#endif /* !(__KERNEL_STRICT_NAMES || __ASSEMBLY__) */
+
+#include <asm/arch/hardware.h>
+
+#define BIT(x) (1 << x)
+#define CL_BIT(x) (0 << x)
+
+/* Timer register bits */
+#define TCLR_ST BIT(0) /* Start=1 Stop=0 */
+#define TCLR_AR BIT(1) /* Auto reload */
+#define TCLR_PRE BIT(5) /* Pre-scaler enable */
+#define TCLR_PTV_SHIFT (2) /* Pre-scaler shift value */
+#define TCLR_PRE_DISABLE CL_BIT(5) /* Pre-scalar disable */
+
+/* device type */
+#define DEVICE_MASK (BIT(8) | BIT(9) | BIT(10))
+#define TST_DEVICE 0x0
+#define EMU_DEVICE 0x1
+#define HS_DEVICE 0x2
+#define GP_DEVICE 0x3
+
+/* cpu-id for AM33XX family */
+#define AM335X 0xB944
+#define DEVICE_ID 0x44E10600
+
+/* This gives the status of the boot mode pins on the evm */
+#define SYSBOOT_MASK (BIT(0) | BIT(1) | BIT(2)\
+ | BIT(3) | BIT(4))
+
+/* Reset control */
+#ifdef CONFIG_AM335X
+#define PRM_RSTCTRL 0x44E00F00
+#endif
+#define PRM_RSTCTRL_RESET 0x01
+
+#ifndef __KERNEL_STRICT_NAMES
+#ifndef __ASSEMBLY__
+/* Encapsulating core pll registers */
+struct cm_wkuppll {
+ unsigned int wkclkstctrl; /* offset 0x00 */
+ unsigned int wkctrlclkctrl; /* offset 0x04 */
+ unsigned int resv1[1];
+ unsigned int wkl4wkclkctrl; /* offset 0x0c */
+ unsigned int resv2[4];
+ unsigned int idlestdpllmpu; /* offset 0x20 */
+ unsigned int resv3[2];
+ unsigned int clkseldpllmpu; /* offset 0x2c */
+ unsigned int resv4[1];
+ unsigned int idlestdpllddr; /* offset 0x34 */
+ unsigned int resv5[2];
+ unsigned int clkseldpllddr; /* offset 0x40 */
+ unsigned int resv6[4];
+ unsigned int clkseldplldisp; /* offset 0x54 */
+ unsigned int resv7[1];
+ unsigned int idlestdpllcore; /* offset 0x5c */
+ unsigned int resv8[2];
+ unsigned int clkseldpllcore; /* offset 0x68 */
+ unsigned int resv9[1];
+ unsigned int idlestdpllper; /* offset 0x70 */
+ unsigned int resv10[3];
+ unsigned int divm4dpllcore; /* offset 0x80 */
+ unsigned int divm5dpllcore; /* offset 0x84 */
+ unsigned int clkmoddpllmpu; /* offset 0x88 */
+ unsigned int clkmoddpllper; /* offset 0x8c */
+ unsigned int clkmoddpllcore; /* offset 0x90 */
+ unsigned int clkmoddpllddr; /* offset 0x94 */
+ unsigned int clkmoddplldisp; /* offset 0x98 */
+ unsigned int clkseldpllper; /* offset 0x9c */
+ unsigned int divm2dpllddr; /* offset 0xA0 */
+ unsigned int divm2dplldisp; /* offset 0xA4 */
+ unsigned int divm2dpllmpu; /* offset 0xA8 */
+ unsigned int divm2dpllper; /* offset 0xAC */
+ unsigned int resv11[1];
+ unsigned int wkup_uart0ctrl; /* offset 0xB4 */
+ unsigned int resv12[8];
+ unsigned int divm6dpllcore; /* offset 0xD8 */
+};
+
+/**
+ * Encapsulating peripheral functional clocks
+ * pll registers
+ */
+struct cm_perpll {
+ unsigned int l4lsclkstctrl; /* offset 0x00 */
+ unsigned int l3sclkstctrl; /* offset 0x04 */
+ unsigned int l4fwclkstctrl; /* offset 0x08 */
+ unsigned int l3clkstctrl; /* offset 0x0c */
+ unsigned int resv1[6];
+ unsigned int emifclkctrl; /* offset 0x28 */
+ unsigned int ocmcramclkctrl; /* offset 0x2c */
+ unsigned int resv2[12];
+ unsigned int l4lsclkctrl; /* offset 0x60 */
+ unsigned int l4fwclkctrl; /* offset 0x64 */
+ unsigned int resv3[6];
+ unsigned int timer2clkctrl; /* offset 0x80 */
+ unsigned int resv4[19];
+ unsigned int emiffwclkctrl; /* offset 0xD0 */
+ unsigned int resv5[2];
+ unsigned int l3instrclkctrl; /* offset 0xDC */
+ unsigned int l3clkctrl; /* Offset 0xE0 */
+ unsigned int resv6[14];
+ unsigned int l4hsclkstctrl; /* offset 0x11C */
+ unsigned int l4hsclkctrl; /* offset 0x120 */
+};
+
+/* Encapsulating Display pll registers */
+struct cm_dpll {
+ unsigned int resv1[2];
+ unsigned int clktimer2clk; /* offset 0x08 */
+};
+
+/* Watchdog timer registers */
+struct wd_timer {
+ unsigned int resv1[4];
+ unsigned int wdtwdsc; /* offset 0x010 */
+ unsigned int wdtwdst; /* offset 0x014 */
+ unsigned int wdtwisr; /* offset 0x018 */
+ unsigned int wdtwier; /* offset 0x01C */
+ unsigned int wdtwwer; /* offset 0x020 */
+ unsigned int wdtwclr; /* offset 0x024 */
+ unsigned int wdtwcrr; /* offset 0x028 */
+ unsigned int wdtwldr; /* offset 0x02C */
+ unsigned int wdtwtgr; /* offset 0x030 */
+ unsigned int wdtwwps; /* offset 0x034 */
+ unsigned int resv2[3];
+ unsigned int wdtwdly; /* offset 0x044 */
+ unsigned int wdtwspr; /* offset 0x048 */
+ unsigned int resv3[1];
+ unsigned int wdtwqeoi; /* offset 0x050 */
+ unsigned int wdtwqstar; /* offset 0x054 */
+ unsigned int wdtwqsta; /* offset 0x058 */
+ unsigned int wdtwqens; /* offset 0x05C */
+ unsigned int wdtwqenc; /* offset 0x060 */
+ unsigned int resv4[39];
+ unsigned int wdt_unfr; /* offset 0x100 */
+};
+
+/* Timer Registers */
+struct timer_reg {
+ unsigned int resv1[4];
+ unsigned int tiocpcfgreg; /* offset 0x10 */
+ unsigned int resv2[9];
+ unsigned int tclrreg; /* offset 0x38 */
+ unsigned int tcrrreg; /* offset 0x3C */
+ unsigned int tldrreg; /* offset 0x40 */
+ unsigned int resv3[4];
+ unsigned int tsicrreg; /* offset 0x54 */
+};
+
+/* Timer 32 bit registers */
+struct gptimer {
+ unsigned int tidr; /* offset 0x00 */
+ unsigned int res1[0xc];
+ unsigned int tiocp_cfg; /* offset 0x10 */
+ unsigned int res2[0xc];
+ unsigned int tier; /* offset 0x20 */
+ unsigned int tistatr; /* offset 0x24 */
+ unsigned int tistat; /* offset 0x28 */
+ unsigned int tisr; /* offset 0x2c */
+ unsigned int tcicr; /* offset 0x30 */
+ unsigned int twer; /* offset 0x34 */
+ unsigned int tclr; /* offset 0x38 */
+ unsigned int tcrr; /* offset 0x3c */
+ unsigned int tldr; /* offset 0x40 */
+ unsigned int ttgr; /* offset 0x44 */
+ unsigned int twpc; /* offset 0x48 */
+ unsigned int tmar; /* offset 0x4c */
+ unsigned int tcar1; /* offset 0x50 */
+ unsigned int tscir; /* offset 0x54 */
+ unsigned int tcar2; /* offset 0x58 */
+};
+
+/* UART Registers */
+struct uart_sys {
+ unsigned int resv1[21];
+ unsigned int uartsyscfg; /* offset 0x54 */
+ unsigned int uartsyssts; /* offset 0x58 */
+};
+
+/* VTP Registers */
+struct vtp_reg {
+ unsigned int vtp0ctrlreg;
+};
+
+/* Control Status Register */
+struct ctrl_stat {
+ unsigned int resv1[16];
+ unsigned int statusreg; /* ofset 0x40 */
+};
+
+void init_timer(void);
+#endif /* __ASSEMBLY__ */
+#endif /* __KERNEL_STRICT_NAMES */
+
+#endif /* _AM33XX_CPU_H */
--- /dev/null
+/*
+ * hardware.h
+ *
+ * hardware specific header
+ *
+ * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.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.
+ */
+
+#ifndef __AM33XX_HARDWARE_H
+#define __AM33XX_HARDWARE_H
+
+/* Module base addresses */
+#define LOW_LEVEL_SRAM_STACK 0x4030B7FC
+#define UART0_BASE 0x44E09000
+
+/* DM Timer base addresses */
+#define DM_TIMER0_BASE 0x4802C000
+#define DM_TIMER1_BASE 0x4802E000
+#define DM_TIMER2_BASE 0x48040000
+#define DM_TIMER3_BASE 0x48042000
+#define DM_TIMER4_BASE 0x48044000
+#define DM_TIMER5_BASE 0x48046000
+#define DM_TIMER6_BASE 0x48048000
+#define DM_TIMER7_BASE 0x4804A000
+
+/* GPIO Base address */
+#define GPIO0_BASE 0x48032000
+#define GPIO1_BASE 0x4804C000
+#define GPIO2_BASE 0x481AC000
+
+/* BCH Error Location Module */
+#define ELM_BASE 0x48080000
+
+/* Watchdog Timer */
+#define WDT_BASE 0x44E35000
+
+/* Control Module Base Address */
+#define CTRL_BASE 0x44E10000
+
+/* PRCM Base Address */
+#define PRCM_BASE 0x44E00000
+
+/* EMIF Base address */
+#define EMIF4_0_CFG_BASE 0x4C000000
+#define EMIF4_1_CFG_BASE 0x4D000000
+#define DMM_BASE 0x4E000000
+
+/* PLL related registers */
+#define CM_PER 0x44E00000
+#define CM_WKUP 0x44E00400
+#define CM_DPLL 0x44E00500
+#define CM_DEVICE 0x44E00700
+#define CM_CEFUSE 0x44E00A00
+#define PRM_DEVICE 0x44E00F00
+
+/* VTP Base address */
+#define VTP0_CTRL_ADDR 0x44E10E0C
+
+/* DDR Base address */
+#define DDR_CTRL_ADDR 0x44E10E04
+#define DDR_CONTROL_BASE_ADDR 0x44E11404
+#define DDR_PHY_BASE_ADDR 0x44E12000
+#define DDR_PHY_BASE_ADDR2 0x44E120A4
+
+/* UART */
+#define DEFAULT_UART_BASE UART0_BASE
+
+#define DDRPHY_0_CONFIG_BASE (CTRL_BASE + 0x1400)
+#define DDRPHY_CONFIG_BASE DDRPHY_0_CONFIG_BASE
+
+#endif /* __AM33XX_HARDWARE_H */
projects / platform / kernel / u-boot.git / commitdiff