From 643be9c07e1c2abcc45d0efd4bbe562c4cb8dcaa Mon Sep 17 00:00:00 2001 From: Rajeshwari Shinde Date: Thu, 4 Jul 2013 12:29:17 +0530 Subject: EXYNOS: Move files from board/samsung to arch/arm This patch performs the following: 1) Convert the assembly code for memory and clock initialization to C code. 2) Move the memory and clock init codes from board/samsung to arch/arm 3) Creat a common lowlevel_init file across Exynos4 and Exynos5. Converted the common lowlevel_init from assembly to C-code 4) Made spl_boot.c and tzpc_init.c common for both exynos4 and exynos5. 5) Enable CONFIG_SKIP_LOWLEVEL_INIT as stack pointer initialisation is already done in _main. 6) exynos-uboot-spl.lds made common across SMDKV310, Origen and SMDK5250. TEST: Tested SD-MMC boot on SMDK5250 and Origen. Tested USB and SPI boot on SMDK5250 Compile tested for SMDKV310. Signed-off-by: Rajeshwari Shinde Signed-off-by: Minkyu Kang --- arch/arm/cpu/armv7/exynos/lowlevel_init.c | 73 +++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 arch/arm/cpu/armv7/exynos/lowlevel_init.c (limited to 'arch/arm/cpu/armv7/exynos/lowlevel_init.c') diff --git a/arch/arm/cpu/armv7/exynos/lowlevel_init.c b/arch/arm/cpu/armv7/exynos/lowlevel_init.c new file mode 100644 index 0000000..11fe5b8 --- /dev/null +++ b/arch/arm/cpu/armv7/exynos/lowlevel_init.c @@ -0,0 +1,73 @@ +/* + * Lowlevel setup for EXYNOS5 based board + * + * Copyright (C) 2013 Samsung Electronics + * Rajeshwari Shinde + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include "common_setup.h" + +/* These are the things we can do during low-level init */ +enum { + DO_WAKEUP = 1 << 0, + DO_CLOCKS = 1 << 1, + DO_MEM_RESET = 1 << 2, + DO_UART = 1 << 3, +}; + +int do_lowlevel_init(void) +{ + uint32_t reset_status; + int actions = 0; + + arch_cpu_init(); + + reset_status = get_reset_status(); + + switch (reset_status) { + case S5P_CHECK_SLEEP: + actions = DO_CLOCKS | DO_WAKEUP; + break; + case S5P_CHECK_DIDLE: + case S5P_CHECK_LPA: + actions = DO_WAKEUP; + break; + default: + /* This is a normal boot (not a wake from sleep) */ + actions = DO_CLOCKS | DO_MEM_RESET; + } + + if (actions & DO_CLOCKS) { + system_clock_init(); + mem_ctrl_init(actions & DO_MEM_RESET); + tzpc_init(); + } + + return actions & DO_WAKEUP; +} -- cgit v1.1