diff options
Diffstat (limited to 'arch/arm/boards/eukrea_cpuimx35/lowlevel.c')
-rw-r--r-- | arch/arm/boards/eukrea_cpuimx35/lowlevel.c | 143 |
1 files changed, 0 insertions, 143 deletions
diff --git a/arch/arm/boards/eukrea_cpuimx35/lowlevel.c b/arch/arm/boards/eukrea_cpuimx35/lowlevel.c deleted file mode 100644 index ab5235f7f0..0000000000 --- a/arch/arm/boards/eukrea_cpuimx35/lowlevel.c +++ /dev/null @@ -1,143 +0,0 @@ -/* - * - * (c) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.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. - * - */ -#include <common.h> -#include <init.h> -#include <mach/imx35-regs.h> -#include <mach/imx-pll.h> -#include <mach/esdctl.h> -#include <asm/cache-l2x0.h> -#include <io.h> -#include <mach/imx-nand.h> -#include <asm/barebox-arm.h> -#include <asm/barebox-arm-head.h> -#include <asm/sections.h> -#include <asm-generic/memory_layout.h> -#include <asm/system.h> - -void __bare_init __naked barebox_arm_reset_vector(uint32_t r0, uint32_t r1, uint32_t r2) -{ - uint32_t r, s; - unsigned long ccm_base = MX35_CCM_BASE_ADDR; - register uint32_t loops = 0x20000; - - arm_cpu_lowlevel_init(); - - arm_setup_stack(MX35_IRAM_BASE_ADDR + MX35_IRAM_SIZE); - - r = get_cr(); - r |= CR_Z; /* Flow prediction (Z) */ - r |= CR_U; /* unaligned accesses */ - r |= CR_FI; /* Low Int Latency */ - - __asm__ __volatile__("mrc p15, 0, %0, c1, c0, 1":"=r"(s)); - s |= 0x7; - __asm__ __volatile__("mcr p15, 0, %0, c1, c0, 1" : : "r"(s)); - - set_cr(r); - - r = 0; - __asm__ __volatile__("mcr p15, 0, %0, c15, c2, 4" : : "r"(r)); - - /* - * Branch predicition is now enabled. Flush the BTAC to ensure a valid - * starting point. Don't flush BTAC while it is disabled to avoid - * ARM1136 erratum 408023. - */ - __asm__ __volatile__("mcr p15, 0, %0, c7, c5, 6" : : "r"(r)); - - /* invalidate I cache and D cache */ - __asm__ __volatile__("mcr p15, 0, %0, c7, c7, 0" : : "r"(r)); - - /* invalidate TLBs */ - __asm__ __volatile__("mcr p15, 0, %0, c8, c7, 0" : : "r"(r)); - - /* Drain the write buffer */ - __asm__ __volatile__("mcr p15, 0, %0, c7, c10, 4" : : "r"(r)); - - /* Also setup the Peripheral Port Remap register inside the core */ - r = 0x40000015; /* start from AIPS 2GB region */ - __asm__ __volatile__("mcr p15, 0, %0, c15, c2, 4" : : "r"(r)); - - /* - * End of ARM1136 init - */ - - writel(0x003F4208, ccm_base + MX35_CCM_CCMR); - - /* Set MPLL , arm clock and ahb clock*/ - writel(MPCTL_PARAM_532, ccm_base + MX35_CCM_MPCTL); - - writel(PPCTL_PARAM_300, ccm_base + MX35_CCM_PPCTL); - writel(0x00001000, ccm_base + MX35_CCM_PDR0); - - r = readl(ccm_base + MX35_CCM_CGR0); - r |= 0x3 << MX35_CCM_CGR0_EPIT1_SHIFT; - writel(r, ccm_base + MX35_CCM_CGR0); - - r = readl(ccm_base + MX35_CCM_CGR1); - r |= 0x3 << MX35_CCM_CGR1_FEC_SHIFT; - r |= 0x3 << MX35_CCM_CGR1_I2C1_SHIFT; - r |= 0x3 << MX35_CCM_CGR1_IOMUX_SHIFT; - writel(r, ccm_base + MX35_CCM_CGR1); - - /* enable watchdog asap */ - r = readl(ccm_base + MX35_CCM_CGR2); - r |= 0x3 << MX35_CCM_CGR2_WDOG_SHIFT; - writel(r, ccm_base + MX35_CCM_CGR2); - - r = readl(MX35_L2CC_BASE_ADDR + L2X0_AUX_CTRL); - r |= 0x1000; - writel(r, MX35_L2CC_BASE_ADDR + L2X0_AUX_CTRL); - - /* Skip SDRAM initialization if we run from RAM */ - r = get_pc(); - if (r > 0x80000000 && r < 0x90000000) - goto out; - - /* Init Mobile DDR */ - writel(0x0000000E, MX35_ESDCTL_BASE_ADDR + IMX_ESDMISC); - writel(0x00000004, MX35_ESDCTL_BASE_ADDR + IMX_ESDMISC); - __asm__ volatile ("1:\n" - "subs %0, %1, #1\n" - "bne 1b":"=r" (loops):"0" (loops)); - - writel(0x0009572B, MX35_ESDCTL_BASE_ADDR + IMX_ESDCFG0); - writel(0x92220000, MX35_ESDCTL_BASE_ADDR + IMX_ESDCTL0); - writeb(0xda, MX35_CSD0_BASE_ADDR + 0x400); - writel(0xA2220000, MX35_ESDCTL_BASE_ADDR + IMX_ESDCTL0); - writeb(0xda, MX35_CSD0_BASE_ADDR); - writeb(0xda, MX35_CSD0_BASE_ADDR); - writel(0xB2220000, MX35_ESDCTL_BASE_ADDR + IMX_ESDCTL0); - writeb(0xda, MX35_CSD0_BASE_ADDR + 0x33); - writeb(0xda, MX35_CSD0_BASE_ADDR + 0x2000000); - writel(0x82228080, MX35_ESDCTL_BASE_ADDR + IMX_ESDCTL0); - - if (IS_ENABLED(CONFIG_ARCH_IMX_EXTERNAL_BOOT_NAND)) { - /* Speed up NAND controller by adjusting the NFC divider */ - r = readl(MX35_CCM_BASE_ADDR + MX35_CCM_PDR4); - r &= ~(0xf << 28); - r |= 0x1 << 28; - writel(r, MX35_CCM_BASE_ADDR + MX35_CCM_PDR4); - - imx35_barebox_boot_nand_external(0); - } - -out: - imx35_barebox_entry(NULL); -} |