diff options
Diffstat (limited to 'board/modnet50/lowlevel_init.S')
| -rw-r--r-- | board/modnet50/lowlevel_init.S | 204 |
1 files changed, 0 insertions, 204 deletions
diff --git a/board/modnet50/lowlevel_init.S b/board/modnet50/lowlevel_init.S deleted file mode 100644 index 52ef2a8..0000000 --- a/board/modnet50/lowlevel_init.S +++ /dev/null @@ -1,204 +0,0 @@ -/* - * Memory Setup stuff - taken from Linux - * - * Copyright (c) 2002 Stephan Linz <linz@mazet.de>, <linz@li-pro.net> - * (c) 2004 IMMS gGmbH <www.imms.de>, Thomas Elste <info@elste.org> - * - * 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/netarm_registers.h> - - -/* some parameters for the board */ -#define FLASH_90ns_WAIT_STATES ((NETARM_PLL_COUNT_VAL + 2) / 3) -#define FLASH_70ns_WAIT_STATES 4 - -#define NETARM_MMAP_CS0_BASE (PHYS_FLASH_1) -#if 1 -#define NETARM_MMAP_CS0_MASK (~(PHYS_FLASH_1_SIZE - 1)) -#else -#define NETARM_MMAP_CS0_MASK (~(1000000 - 1)) -#endif -#define NETARM_MMAP_CS1_BASE (PHYS_SDRAM_1) -#define NETARM_MMAP_CS1_MASK (~(PHYS_SDRAM_1_SIZE - 1)) -#define NETARM_MMAP_CS2_BASE (PHYS_SDRAM_2) -#define NETARM_MMAP_CS2_MASK (~(PHYS_SDRAM_2_SIZE - 1)) -#if defined(CONFIG_NETARM_EEPROM) && defined(PHYS_NVRAM_1) && defined(PHYS_NVRAM_SIZE) -#define NETARM_MMAP_CS3_BASE (PHYS_NVRAM_1) -#define NETARM_MMAP_CS3_MASK (~(PHYS_NVRAM_SIZE - 1)) -#endif -#define NETARM_MMAP_CS4_BASE (PHYS_EXT_1) -#define NETARM_MMAP_CS4_MASK (~(PHYS_EXT_SIZE - 1)) - -/* setting up the memory */ -.globl lowlevel_init -lowlevel_init: - -#if defined(CONFIG_MODNET50) - ldr pc, =(_jump_to_high + NETARM_MMAP_CS0_BASE - CONFIG_SYS_TEXT_BASE) - -_jump_to_high: - /* - * MEM Config Reg - * --------------------------------------------------- - */ - ldr r0, =NETARM_MEM_MODULE_BASE - ldr r1, =( NETARM_MEM_REFR_PERIOD_USEC(16) | \ - NETARM_MEM_CFG_REFRESH_EN | \ - NETARM_MEM_CFG_REFR_CYCLE_5CLKS ) - str r1, [r0, #+NETARM_MEM_MODULE_CONFIG] - - -memsetup_cs0: - /* - * Base Addr / Option Reg 0 (Flash) - * --------------------------------------------------- - */ - ldr r1, =( NETARM_MEM_BAR_BASE(NETARM_MMAP_CS0_BASE) | \ - NETARM_MEM_BAR_DRAM_FP | \ - NETARM_MEM_BAR_DRAM_MUX_INT | \ - NETARM_MEM_BAR_DRAM_MUX_BAL | \ - NETARM_MEM_BAR_VALID ) - str r1, [r0, #+NETARM_MEM_CS0_BASE_ADDR] - - /* trust that the bus size for flash was strapped correctly */ - /* this saves the bus width in r2 and then ORs it back in */ - /* it's pretty safe assumption, otherwise it wouldn't boot */ - ldr r2, [r0, #+NETARM_MEM_CS0_OPTIONS] - and r2, r2, #NETARM_MEM_OPT_BUS_SIZE_MASK - -/* just a test: assume 32 bit flash mem */ -/* mov r2, #NETARM_MEM_OPT_32BIT */ - - ldr r1, =( NETARM_MEM_OPT_BASE_USE(NETARM_MMAP_CS0_MASK) | \ - NETARM_MEM_OPT_WAIT_STATES(FLASH_70ns_WAIT_STATES) | \ - NETARM_MEM_OPT_BCYC_4 | \ - NETARM_MEM_OPT_BSIZE_16 | \ - NETARM_MEM_OPT_16BIT | \ - NETARM_MEM_OPT_READ_ASYNC | \ - NETARM_MEM_OPT_WRITE_ASYNC ) - - orr r1, r1, r2 - str r1, [r0, #+NETARM_MEM_CS0_OPTIONS] - - -memsetup_cs1: - /* - * Base Addr / Option Reg 1 (DRAM #1) - * --------------------------------------------------- - */ -#ifdef CONFIG_NETARM_NET40_REV2 - /* we have to config SDRAM in burst mode */ - ldr r1, =( NETARM_MEM_OPT_BASE_USE(NETARM_MMAP_CS1_MASK) | \ - NETARM_MEM_OPT_BCYC_2 | \ - NETARM_MEM_OPT_BSIZE_16 | \ - NETARM_MEM_OPT_WAIT_STATES(0) | \ - NETARM_MEM_OPT_32BIT | \ - NETARM_MEM_OPT_READ_ASYNC | \ - NETARM_MEM_OPT_WRITE_ASYNC ) - str r1, [r0, #+NETARM_MEM_CS1_OPTIONS] - - ldr r1, =( NETARM_MEM_BAR_BASE(NETARM_MMAP_CS1_BASE) | \ - NETARM_MEM_BAR_DRAM_SYNC | \ - NETARM_MEM_BAR_DRAM_MUX_INT | \ - NETARM_MEM_BAR_DRAM_MUX_UNBAL | \ - NETARM_MEM_BAR_DRAM_SEL | \ - NETARM_MEM_BAR_BURST_EN | \ - NETARM_MEM_BAR_VALID ) - str r1, [r0, #+NETARM_MEM_CS1_BASE_ADDR] -#else - /* we have to config FPDRAM in burst mode with smaller burst access size */ - ldr r1, =( NETARM_MEM_OPT_BASE_USE(NETARM_MMAP_CS1_MASK) | \ - NETARM_MEM_OPT_BCYC_2 | \ - NETARM_MEM_OPT_BSIZE_16 | \ - NETARM_MEM_OPT_WAIT_STATES(0) | \ - NETARM_MEM_OPT_32BIT | \ - NETARM_MEM_OPT_READ_ASYNC | \ - NETARM_MEM_OPT_WRITE_ASYNC ) - str r1, [r0, #+NETARM_MEM_CS1_OPTIONS] - - ldr r1, =( NETARM_MEM_BAR_BASE(NETARM_MMAP_CS1_BASE) | \ - NETARM_MEM_BAR_DRAM_SYNC | \ - NETARM_MEM_BAR_DRAM_MUX_INT | \ - NETARM_MEM_BAR_DRAM_MUX_UNBAL | \ - NETARM_MEM_BAR_DRAM_SEL | \ - NETARM_MEM_BAR_BURST_EN | \ - NETARM_MEM_BAR_VALID ) - str r1, [r0, #+NETARM_MEM_CS1_BASE_ADDR] - -#endif /* CONFIG_NETARM_NET40_REV2 */ - - -memsetup_cs3: - /* - * Base Addr / Option Reg 3 (EEPROM, NVRAM) - * --------------------------------------------------- - */ -#if defined(CONFIG_NETARM_EEPROM) && defined(PHYS_NVRAM_1) && defined(PHYS_NVRAM_SIZE) - ldr r1, =( NETARM_MEM_OPT_BASE_USE(NETARM_MMAP_CS3_MASK) | \ - NETARM_MEM_OPT_BCYC_3 | \ - NETARM_MEM_OPT_BSIZE_2 | \ - NETARM_MEM_OPT_WAIT_STATES(10) | \ - NETARM_MEM_OPT_8BIT | \ - NETARM_MEM_OPT_READ_ASYNC | \ - NETARM_MEM_OPT_WRITE_ASYNC ) - str r1, [r0, #+NETARM_MEM_CS3_OPTIONS] - - ldr r1, =( NETARM_MEM_BAR_BASE(NETARM_MMAP_CS3_BASE) | \ - NETARM_MEM_BAR_DRAM_FP | \ - NETARM_MEM_BAR_DRAM_MUX_INT | \ - NETARM_MEM_BAR_DRAM_MUX_BAL | \ - NETARM_MEM_BAR_VALID ) - str r1, [r0, #+NETARM_MEM_CS3_BASE_ADDR] -#else - /* we don't need EEPROM --> no config */ - ldr r1, =( 0 ) - str r1, [r0, #+NETARM_MEM_CS3_OPTIONS] - - ldr r1, =( 0 ) - str r1, [r0, #+NETARM_MEM_CS3_BASE_ADDR] -#endif - - -#else -/* -#error "missing CONFIG_MODNET50 (see your config.h)" -*/ -#endif /* CONFIG_MODNET50 */ - - -lowlevel_init_end: - /* - * manipulate address in lr and ip to match new - * address space - */ - ldr r3, =(NETARM_MMAP_CS0_BASE) - mov r0, lr - add r0, r3, r0 - mov lr, r0 - mov r0, ip - add r0, r3, r0 - mov ip, r0 - - /* everything is fine now */ - mov pc, lr |