/* * Copyright (C) 2013 Antony Pavlov <antonynpavlov@gmail.com> * Copyright (C) 2013 Oleksij Rempel <linux@rempel-privat.de> * * This file is part of barebox. * 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 version 2 * as published by the Free Software Foundation. * * 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. * */ #define BOARD_PBL_START start_netgear_wg102 #include <asm/pbl_macros.h> #include <mach/pbl_macros.h> #include <mach/ar2312_regs.h> #include <mach/debug_ll.h> ENTRY_FUNCTION(BOARD_PBL_START) mips_barebox_10h mips_disable_interrupts pbl_ar2312_pll pbl_ar2312_rst_uart0 debug_ll_ns16550_init debug_ll_outc 'a' debug_ll_ns16550_outnl /* check if SDRAM is already configured, * if yes, we are probably starting * as second stage loader and can skip configuration */ la t0, KSEG1 | AR2312_MEM_CFG1 lw t1, 0(t0) and t0, t1, MEM_CFG1_E0 beq zero, t0, 1f nop pbl_probe_mem t0, t1, KSEG1 beq t0, t1, sdram_configured nop 1: /* start SDRAM configuration */ pbl_ar2312_x16_sdram /* check one more time. if some thing wrong, * we don't need to continue */ pbl_probe_mem t0, t1, KSEG1 beq t0, t1, sdram_configured nop debug_ll_outc '#' debug_ll_ns16550_outnl 1: b 1b /* dead end */ nop sdram_configured: debug_ll_outc 'b' debug_ll_ns16550_outnl copy_to_link_location BOARD_PBL_START; stack_setup; lw a0, 0; la v0, pbl_main_entry; jal v0; nop; /* No return */ __error: b __error; nop;