Apollon BSP support (take #2)
The Apollon based on OMAP2420 is designed for OneNAND development. It's similar with OMAP2420 H4 except some peripherals.
Now this board is maintained at mainline kernel.
Signed-off-by: Kyungmin Park kyungmin.park@samsung.com --- diff --git a/board/apollon/lowlevel_init.S b/board/apollon/lowlevel_init.S new file mode 100644 index 0000000..fbc6df2 --- /dev/null +++ b/board/apollon/lowlevel_init.S @@ -0,0 +1,340 @@ +/* + * Board specific setup info + * + * (C) Copyright 2005-2007 + * Samsung Electronics, + * Kyungmin Park kyungmin.park@samsung.com + * + * 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 <config.h> +#include <version.h> +#include <asm/arch/omap2420.h> +#include <asm/arch/mem.h> +#include <asm/arch/clocks.h> +#include "mem.h" + +#define APOLLON_CS0_BASE 0x00000000 + +#ifdef PRCM_CONFIG_I +#define SDRC_ACTIM_CTRLA_0_VAL 0x7BA35907 +#define SDRC_ACTIM_CTRLB_0_VAL 0x00000013 +#define SDRC_RFR_CTRL_0_VAL 0x00044C01 +#elif defined(PRCM_CONFIG_II) +#define SDRC_ACTIM_CTRLA_0_VAL 0x4A59B485 +#define SDRC_ACTIM_CTRLB_0_VAL 0x0000000C +#define SDRC_RFR_CTRL_0_VAL 0x00030001 +#endif + +#define SDRAM_BASE_ADDRESS 0x80008000 + +_TEXT_BASE: + .word TEXT_BASE /* sdram load addr from config.mk */ + +.globl lowlevel_init +lowlevel_init: + +#ifdef CFG_NOR_BOOT + /* Check running in SDRAM */ + mov r0, pc, lsr #28 + cmp r0, #8 + beq prcm_setup + +flash_setup: + /* In Flash */ + ldr r0, =WD2_BASE + ldr r1, =WD_UNLOCK1 + str r1, [r0, #WSPR] + + ldr r1, =WD_UNLOCK2 + str r1, [r0, #WSPR] + + /* Pin muxing for SDRC */ + mov r1, #0x00 + ldr r0, =0x480000A1 /* ball C12, mode 0 */ + strb r1, [r0] + + ldr r0, =0x48000032 /* ball D11, mode 0 */ + strb r1, [r0] + + ldr r0, =0x480000A3 /* ball B13, mode 0 */ + strb r1, [r0] + + /* SDRC setting */ + ldr r0, =OMAP2420_SDRC_BASE + ldr r1, =0x00000010 + str r1, [r0, #0x10] + + ldr r1, =0x00000100 + str r1, [r0, #0x44] + + /* SDRC CS0 configuration */ + ldr r1, =0x00d04011 + str r1, [r0, #0x80] + + ldr r1, =SDRC_ACTIM_CTRLA_0_VAL + str r1, [r0, #0x9C] + + ldr r1, =SDRC_ACTIM_CTRLB_0_VAL + str r1, [r0, #0xA0] + + ldr r1, =SDRC_RFR_CTRL_0_VAL + str r1, [r0, #0xA4] + + ldr r1, =0x00000041 + str r1, [r0, #0x70] + + /* Manual command sequence */ + ldr r1, =0x00000007 + str r1, [r0, #0xA8] + + ldr r1, =0x00000000 + str r1, [r0, #0xA8] + + ldr r1, =0x00000001 + str r1, [r0, #0xA8] + + ldr r1, =0x00000002 + str r1, [r0, #0xA8] + str r1, [r0, #0xA8] + + /* + * CS0 SDRC Mode register + * Burst length = 4 - DDR memory + * Serial mode + * CAS latency = 3 + */ + ldr r1, =0x00000032 + str r1, [r0, #0x84] + + /* Note: You MUST set EMR values */ + /* EMR1 & EMR2 */ + ldr r1, =0x00000000 + str r1, [r0, #0x88] + str r1, [r0, #0x8C] + +#ifdef OLD_SDRC_DLLA_CTRL + /* SDRC_DLLA_CTRL */ + ldr r1, =0x00007306 + str r1, [r0, #0x60] + + ldr r1, =0x00007303 + str r1, [r0, #0x60] +#else + /* SDRC_DLLA_CTRL */ + ldr r1, =0x00000506 + str r1, [r0, #0x60] + + ldr r1, =0x00000503 + str r1, [r0, #0x60] +#endif + +#ifdef __BROKEN_FEATURE__ + /* SDRC_DLLB_CTRL */ + ldr r1, =0x00000506 + str r1, [r0, #0x68] + + ldr r1, =0x00000503 + str r1, [r0, #0x68] +#endif + + /* little delay after init */ + mov r2, #0x1800 +1: + subs r2, r2, #0x1 + bne 1b + + /* Setup base address */ + ldr r0, =0x00000000 /* NOR address */ + ldr r1, =SDRAM_BASE_ADDRESS /* SDRAM address */ + ldr r2, =0x20000 /* Size: 128KB */ + +copy_loop: + ldmia r0!, {r3-r10} + stmia r1!, {r3-r10} + cmp r0, r2 + ble copy_loop + + ldr r1, =SDRAM_BASE_ADDRESS + mov lr, pc + mov pc, r1 +#endif + +prcm_setup: + ldr r0, =OMAP2420_CM_BASE + ldr r1, [r0, #0x544] /* CLKSEL2_PLL */ + bic r1, r1, #0x03 + orr r1, r1, #0x02 + str r1, [r0, #0x544] + + ldr r1, [r0, #0x500] + bic r1, r1, #0x03 + orr r1, r1, #0x01 + str r1, [r0, #0x500] + + ldr r1, [r0, #0x140] + bic r1, r1, #0x1f + orr r1, r1, #0x02 + str r1, [r0, #0x140] + +#ifdef PRCM_CONFIG_I + ldr r1, =0x000003C3 +#else + ldr r1, =0x00000343 +#endif + str r1, [r0, #0x840] + + ldr r1, =0x00000002 + str r1, [r0, #0x340] + + ldr r1, =CM_CLKSEL1_CORE +#ifdef PRCM_CONFIG_I + ldr r2, =0x08300C44 +#else + ldr r2, =0x04600C26 +#endif + str r2, [r1] + + ldr r0, =OMAP2420_CM_BASE + ldr r1, [r0, #0x084] + and r1, r1, #0x01 + cmp r1, #0x01 + bne clkvalid + + b . + +clkvalid: + mov r1, #0x01 + str r1, [r0, #0x080] + +waitvalid: + ldr r1, [r0, #0x084] + and r1, r1, #0x01 + cmp r1, #0x00 + bne waitvalid + + ldr r0, =CM_CLKSEL1_PLL +#ifdef PRCM_CONFIG_I + ldr r1, =0x01837100 +#else + ldr r1, =0x01832100 +#endif + str r1, [r0] + + ldr r0, =PRCM_CLKCFG_CTRL + mov r1, #0x01 + str r1, [r0] + mov r6, #0x50 +loop1: + subs r6, r6, #0x01 + cmp r6, #0x01 + bne loop1 + + ldr r0, =CM_CLKEN_PLL + mov r1, #0x0f + str r1, [r0] + + mov r6, #0x100 +loop2: + subs r6, r6, #0x01 + cmp r6, #0x01 + bne loop2 + + ldr r0, =0x48008200 + ldr r1, =0xbfffffff + str r1, [r0] + + ldr r0, =0x48008210 + ldr r1, =0xfffffff9 + str r1, [r0] + +#if 1 + ldr r0, =0x4806a004 + ldr r1, =0x00 + strb r1, [r0] + + ldr r0, =0x4806a020 + ldr r1, =0x07 + strb r1, [r0] + + ldr r0, =0x4806a00c + ldr r1, =0x83 + strb r1, [r0] + + ldr r0, =0x4806a000 + ldr r1, =0x1a + strb r1, [r0] + + ldr r0, =0x4806a004 + ldr r1, =0x00 + strb r1, [r0] + + ldr r0, =0x4806a00c + ldr r1, =0x03 + strb r1, [r0] + + ldr r0, =0x4806a010 + ldr r1, =0x03 + strb r1, [r0] + + ldr r0, =0x4806a008 + ldr r1, =0x04 + strb r1, [r0] + + ldr r0, =0x4806a020 + ldr r1, =0x00 + strb r1, [r0] + +#if 0 + ldr r0, =0x4806a000 + mov r1, #'u' + strb r1, [r0] +#endif + +#if 0 + /* LED0 OFF */ + ldr r3, =0x480000E5 + mov r4, #0x0b + strb r4, [r3] +#endif + +#endif + + ldr sp, SRAM_STACK + str ip, [sp] /* stash old link register */ + mov ip, lr /* save link reg across call */ + bl s_init /* go setup pll,mux,memory */ + ldr ip, [sp] /* restore save ip */ + mov lr, ip /* restore link reg */ + + /* map interrupt controller */ + ldr r0, VAL_INTH_SETUP + mcr p15, 0, r0, c15, c2, 4 + + /* back to arch calling code */ + mov pc, lr + + /* the literal pools origin */ + .ltorg + +VAL_INTH_SETUP: + .word PERIFERAL_PORT_BASE +SRAM_STACK: + .word LOW_LEVEL_SRAM_STACK diff --git a/board/apollon/sys_info.c b/board/apollon/sys_info.c new file mode 100644 index 0000000..26ac9a2 --- /dev/null +++ b/board/apollon/sys_info.c @@ -0,0 +1,403 @@ +/* + * (C) Copyright 2005-2007 + * Samsung Electronics, + * Kyungmin Park kyungmin.park@samsung.com + * + * Derived from omap2420 + * + * 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/omap2420.h> +#include <asm/io.h> +#include <asm/arch/bits.h> +#include <asm/arch/mem.h> /* get mem tables */ +#include <asm/arch/sys_proto.h> +#include <asm/arch/sys_info.h> +#include <i2c.h> + +/************************************************************************** + * get_prod_id() - get id info from chips + ***************************************************************************/ +static u32 get_prod_id(void) +{ + u32 p; + p = __raw_readl(PRODUCTION_ID); /* get production ID */ + return ((p & CPU_242X_PID_MASK) >> 16); +} + +/************************************************************************** + * get_cpu_type() - low level get cpu type + * - no C globals yet. + * - just looking to say if this is a 2422 or 2420 or ... + * - to start with we will look at switch settings.. + * - 2422 id's same as 2420 for ES1 will rely on H4 board characteristics + * (mux for 2420, non-mux for 2422). + ***************************************************************************/ +u32 get_cpu_type(void) +{ + u32 v; + + switch (get_prod_id()) { + case 1:; /* 2420 */ + case 2: + return (CPU_2420); + break; /* 2420 pop */ + case 4: + return (CPU_2422); + break; + case 8: + return (CPU_2423); + break; + default: + break; /* early 2420/2422's unmarked */ + } + + v = __raw_readl(TAP_IDCODE_REG); + v &= CPU_24XX_ID_MASK; + /* currently 2420 and 2422 have same id */ + if (v == CPU_2420_CHIPID) { + if (is_gpmc_muxed() == GPMC_MUXED) /* if mux'ed */ + return (CPU_2420); + else + return (CPU_2422); + } else + return (CPU_2420); /* don't know, say 2420 */ +} + +/****************************************** + * get_cpu_rev(void) - extract version info + ******************************************/ +u32 get_cpu_rev(void) +{ + u32 v; + v = __raw_readl(TAP_IDCODE_REG); + v = v >> 28; + return (v + 1); /* currently 2422 and 2420 match up */ +} + +/**************************************************** + * is_mem_sdr() - return 1 if mem type in use is SDR + ****************************************************/ +u32 is_mem_sdr(void) +{ + volatile u32 *burst = (volatile u32 *)(SDRC_MR_0 + SDRC_CS0_OSET); + if (*burst == H4_2420_SDRC_MR_0_SDR) + return (1); + return (0); +} + +/*********************************************************** + * get_mem_type() - identify type of mDDR part used. + * 2422 uses stacked DDR, 2 parts CS0/CS1. + * 2420 may have 1 or 2, no good way to know...only init 1... + * when eeprom data is up we can select 1 more. + *************************************************************/ +u32 get_mem_type(void) +{ + u32 cpu, sdr = is_mem_sdr(); + + cpu = get_cpu_type(); + if (cpu == CPU_2422 || cpu == CPU_2423) + return (DDR_STACKED); + + if (get_prod_id() == 0x2) + return (XDR_POP); + + if (get_board_type() == BOARD_H4_MENELAUS) + if (sdr) + return (SDR_DISCRETE); + else + return (DDR_COMBO); + else if (sdr) /* SDP + SDR kit */ + return (SDR_DISCRETE); + else + return (DDR_DISCRETE); /* origional SDP */ +} + +/*********************************************************************** + * get_cs0_size() - get size of chip select 0/1 + ************************************************************************/ +u32 get_sdr_cs_size(u32 offset) +{ + u32 size; + size = __raw_readl(SDRC_MCFG_0 + offset) >> 8; /* get ram size field */ + size &= 0x2FF; /* remove unwanted bits */ + size *= SZ_2M; /* find size in MB */ + return (size); +} + +/*********************************************************************** + * get_board_type() - get board type based on current production stats. + * --- NOTE: 2 I2C EEPROMs will someday be populated with proper info. + * when they are available we can get info from there. This should + * be correct of all known boards up until today. + ************************************************************************/ +u32 get_board_type(void) +{ + return (BOARD_H4_SDP); +} + +/****************************************************************** + * get_sysboot_value() - get init word settings (dip switch on h4) + ******************************************************************/ +inline u32 get_sysboot_value(void) +{ + return (0x00000FFF & __raw_readl(CONTROL_STATUS)); +} + +/*************************************************************************** + * get_gpmc0_base() - Return current address hardware will be + * fetching from. The below effectively gives what is correct, its a bit + * mis-leading compared to the TRM. For the most general case the mask + * needs to be also taken into account this does work in practice. + * - for u-boot we currently map: + * -- 0 to nothing, + * -- 4 to flash + * -- 8 to enent + * -- c to wifi + ****************************************************************************/ +u32 get_gpmc0_base(void) +{ + u32 b; + + b = __raw_readl(GPMC_CONFIG7_0); + b &= 0x1F; /* keep base [5:0] */ + b = b << 24; /* ret 0x0b000000 */ + return (b); +} + +/***************************************************************** + * is_gpmc_muxed() - tells if address/data lines are multiplexed + *****************************************************************/ +u32 is_gpmc_muxed(void) +{ + u32 mux; + mux = get_sysboot_value(); + if ((mux & (BIT0 | BIT1 | BIT2 | BIT3)) == (BIT0 | BIT2 | BIT3)) + return (GPMC_MUXED); /* NAND Boot mode */ + if (mux & BIT1) /* if mux'ed */ + return (GPMC_MUXED); + else + return (GPMC_NONMUXED); +} + +/************************************************************************ + * get_gpmc0_type() - read sysboot lines to see type of memory attached + ************************************************************************/ +u32 get_gpmc0_type(void) +{ + u32 type; + type = get_sysboot_value(); + if ((type & (BIT3 | BIT2)) == (BIT3 | BIT2)) + return (TYPE_NAND); + else + return (TYPE_NOR); +} + +/******************************************************************* + * get_gpmc0_width() - See if bus is in x8 or x16 (mainly for nand) + *******************************************************************/ +u32 get_gpmc0_width(void) +{ + u32 width; + width = get_sysboot_value(); + if ((width & 0xF) == (BIT3 | BIT2)) + return (WIDTH_8BIT); + else + return (WIDTH_16BIT); +} + +/********************************************************************* + * wait_on_value() - common routine to allow waiting for changes in + * volatile regs. + *********************************************************************/ +u32 wait_on_value(u32 read_bit_mask, u32 match_value, u32 read_addr, u32 bound) +{ + u32 i = 0, val; + do { + ++i; + val = __raw_readl(read_addr) & read_bit_mask; + if (val == match_value) + return (1); + if (i == bound) + return (0); + } while (1); +} + +/********************************************************************* + * display_board_info() - print banner with board info. + *********************************************************************/ +void display_board_info(u32 btype) +{ + char cpu_2420[] = "2420"; /* cpu type */ + char cpu_2422[] = "2422"; + char cpu_2423[] = "2423"; + char db_men[] = "Menelaus"; /* board type */ + char db_ip[] = "IP"; + char mem_sdr[] = "mSDR"; /* memory type */ + char mem_ddr[] = "mDDR"; + char t_tst[] = "TST"; /* security level */ + char t_emu[] = "EMU"; + char t_hs[] = "HS"; + char t_gp[] = "GP"; + char unk[] = "?"; + + char *cpu_s, *db_s, *mem_s, *sec_s; + u32 cpu, rev, sec; + + rev = get_cpu_rev(); + cpu = get_cpu_type(); + sec = get_device_type(); + + if (is_mem_sdr()) + mem_s = mem_sdr; + else + mem_s = mem_ddr; + + if (cpu == CPU_2423) + cpu_s = cpu_2423; + else if (cpu == CPU_2422) + cpu_s = cpu_2422; + else + cpu_s = cpu_2420; + + if (btype == BOARD_H4_MENELAUS) + db_s = db_men; + else + db_s = db_ip; + + switch (sec) { + case TST_DEVICE: + sec_s = t_tst; + break; + case EMU_DEVICE: + sec_s = t_emu; + break; + case HS_DEVICE: + sec_s = t_hs; + break; + case GP_DEVICE: + sec_s = t_gp; + break; + default: + sec_s = unk; + } + + printf("OMAP%s-%s revision %d\n", cpu_s, sec_s, rev - 1); + printf("Samsung Apollon SDP Base Board + %s \n", mem_s); +} + +/************************************************************************* + * get_board_rev() - setup to pass kernel board revision information + * 0 = 242x IP platform (first 2xx boards) + * 1 = 242x Menelaus platfrom. + *************************************************************************/ +u32 get_board_rev(void) +{ + u32 rev = 0; + u32 btype = get_board_type(); + + if (btype == BOARD_H4_MENELAUS) + rev = 1; + return (rev); +} + +/******************************************************** + * get_base(); get upper addr of current execution + *******************************************************/ +u32 get_base(void) +{ + u32 val; + __asm__ __volatile__("mov %0, pc \n":"=r"(val)::"memory"); + val &= 0xF0000000; + val >>= 28; + return (val); +} + +/******************************************************** + * get_base2(); get 2upper addr of current execution + *******************************************************/ +u32 get_base2(void) +{ + u32 val; + __asm__ __volatile__("mov %0, pc \n":"=r"(val)::"memory"); + val &= 0xFF000000; + val >>= 24; + return (val); +} + +/******************************************************** + * running_in_flash() - tell if currently running in + * flash. + *******************************************************/ +u32 running_in_flash(void) +{ + if (get_base() < 4) + return (1); /* in flash */ + return (0); /* running in SRAM or SDRAM */ +} + +/******************************************************** + * running_in_sram() - tell if currently running in + * sram. + *******************************************************/ +u32 running_in_sram(void) +{ + if (get_base() == 4) + return (1); /* in SRAM */ + return (0); /* running in FLASH or SDRAM */ +} + +/******************************************************** + * running_in_sdram() - tell if currently running in + * flash. + *******************************************************/ +u32 running_in_sdram(void) +{ + if (get_base() > 4) + return (1); /* in sdram */ + return (0); /* running in SRAM or FLASH */ +} + +/************************************************************* + * running_from_internal_boot() - am I a signed NOR image. + *************************************************************/ +u32 running_from_internal_boot(void) +{ + u32 v, base; + + v = get_sysboot_value() & BIT3; + base = get_base2(); + /* if running at mask rom flash address and + * sysboot3 says this was an internal boot + */ + if ((base == 0x08) && v) + return (1); + else + return (0); +} + +/************************************************************* + * get_device_type(): tell if GP/HS/EMU/TST + *************************************************************/ +u32 get_device_type(void) +{ + int mode; + mode = __raw_readl(CONTROL_STATUS) & (BIT10 | BIT9 | BIT8); + return (mode >>= 8); +} diff --git a/board/apollon/u-boot.lds b/board/apollon/u-boot.lds new file mode 100644 index 0000000..5f2b5cd --- /dev/null +++ b/board/apollon/u-boot.lds @@ -0,0 +1,63 @@ +/* + * + * Copyright (C) 2005-2007 Samsung Elecronics + * Kyungin Park kyugnmin.park@samsung.com + * + * January 2004 - Changed to support H4 device + * Copyright (c) 2004 Texas Instruments + * + * (C) Copyright 2002 + * Gary Jennejohn, DENX Software Engineering, gj@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 + */ + +OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm") +OUTPUT_ARCH(arm) +ENTRY(_start) +SECTIONS +{ + . = 0x00000000; + + . = ALIGN(4); + .text : + { + cpu/arm1136/start.o (.text) + *(.text) + } + + . = ALIGN(4); + .rodata : { *(.rodata) } + + . = ALIGN(4); + .data : { *(.data) } + + . = ALIGN(4); + .got : { *(.got) } + + . = .; + __u_boot_cmd_start = .; + .u_boot_cmd : { *(.u_boot_cmd) } + __u_boot_cmd_end = .; + + . = ALIGN(4); + __bss_start = .; + .bss : { *(.bss) } + _end = .; +}