mirror of
https://github.com/AsahiLinux/u-boot
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124a06d7fb
This is useful for forcing the ROM's usb downloader to activate upon a watchdog reset. Or, you can boot from either SD Card. Currently, support added for MX53 and MX6Q Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com> Note: MX53 support untested. Acked-by: Stefano Babic <sbabic@denx.de>
156 lines
3.9 KiB
C
156 lines
3.9 KiB
C
/*
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* (C) Copyright 2007
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* Sascha Hauer, Pengutronix
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*
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* (C) Copyright 2009 Freescale Semiconductor, Inc.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <asm/arch/imx-regs.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/errno.h>
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#include <asm/io.h>
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#include <asm/imx-common/boot_mode.h>
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#if !(defined(CONFIG_MX51) || defined(CONFIG_MX53))
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#error "CPU_TYPE not defined"
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#endif
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u32 get_cpu_rev(void)
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{
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#ifdef CONFIG_MX51
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int system_rev = 0x51000;
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#else
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int system_rev = 0x53000;
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#endif
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int reg = __raw_readl(ROM_SI_REV);
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#if defined(CONFIG_MX51)
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switch (reg) {
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case 0x02:
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system_rev |= CHIP_REV_1_1;
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break;
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case 0x10:
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if ((__raw_readl(GPIO1_BASE_ADDR + 0x0) & (0x1 << 22)) == 0)
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system_rev |= CHIP_REV_2_5;
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else
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system_rev |= CHIP_REV_2_0;
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break;
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case 0x20:
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system_rev |= CHIP_REV_3_0;
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break;
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default:
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system_rev |= CHIP_REV_1_0;
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break;
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}
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#else
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if (reg < 0x20)
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system_rev |= CHIP_REV_1_0;
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else
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system_rev |= reg;
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#endif
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return system_rev;
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}
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#ifndef CONFIG_SYS_DCACHE_OFF
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void enable_caches(void)
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{
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/* Enable D-cache. I-cache is already enabled in start.S */
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dcache_enable();
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}
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#endif
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#if defined(CONFIG_FEC_MXC)
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void imx_get_mac_from_fuse(int dev_id, unsigned char *mac)
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{
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int i;
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struct iim_regs *iim = (struct iim_regs *)IMX_IIM_BASE;
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struct fuse_bank *bank = &iim->bank[1];
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struct fuse_bank1_regs *fuse =
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(struct fuse_bank1_regs *)bank->fuse_regs;
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for (i = 0; i < 6; i++)
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mac[i] = readl(&fuse->mac_addr[i]) & 0xff;
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}
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#endif
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void set_chipselect_size(int const cs_size)
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{
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unsigned int reg;
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struct iomuxc *iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
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reg = readl(&iomuxc_regs->gpr1);
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switch (cs_size) {
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case CS0_128:
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reg &= ~0x7; /* CS0=128MB, CS1=0, CS2=0, CS3=0 */
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reg |= 0x5;
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break;
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case CS0_64M_CS1_64M:
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reg &= ~0x3F; /* CS0=64MB, CS1=64MB, CS2=0, CS3=0 */
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reg |= 0x1B;
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break;
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case CS0_64M_CS1_32M_CS2_32M:
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reg &= ~0x1FF; /* CS0=64MB, CS1=32MB, CS2=32MB, CS3=0 */
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reg |= 0x4B;
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break;
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case CS0_32M_CS1_32M_CS2_32M_CS3_32M:
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reg &= ~0xFFF; /* CS0=32MB, CS1=32MB, CS2=32MB, CS3=32MB */
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reg |= 0x249;
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break;
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default:
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printf("Unknown chip select size: %d\n", cs_size);
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break;
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}
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writel(reg, &iomuxc_regs->gpr1);
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}
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#ifdef CONFIG_MX53
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void boot_mode_apply(unsigned cfg_val)
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{
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writel(cfg_val, &((struct srtc_regs *)SRTC_BASE_ADDR)->lpgr);
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}
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/*
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* cfg_val will be used for
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* Boot_cfg3[7:0]:Boot_cfg2[7:0]:Boot_cfg1[7:0]
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*
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* If bit 28 of LPGR is set upon watchdog reset,
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* bits[25:0] of LPGR will move to SBMR.
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*/
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const struct boot_mode soc_boot_modes[] = {
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{"normal", MAKE_CFGVAL(0x00, 0x00, 0x00, 0x00)},
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/* usb or serial download */
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{"usb", MAKE_CFGVAL(0x00, 0x00, 0x00, 0x13)},
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{"sata", MAKE_CFGVAL(0x28, 0x00, 0x00, 0x12)},
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{"escpi1:0", MAKE_CFGVAL(0x38, 0x20, 0x00, 0x12)},
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{"escpi1:1", MAKE_CFGVAL(0x38, 0x20, 0x04, 0x12)},
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{"escpi1:2", MAKE_CFGVAL(0x38, 0x20, 0x08, 0x12)},
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{"escpi1:3", MAKE_CFGVAL(0x38, 0x20, 0x0c, 0x12)},
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/* 4 bit bus width */
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{"esdhc1", MAKE_CFGVAL(0x40, 0x20, 0x00, 0x12)},
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{"esdhc2", MAKE_CFGVAL(0x40, 0x20, 0x08, 0x12)},
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{"esdhc3", MAKE_CFGVAL(0x40, 0x20, 0x10, 0x12)},
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{"esdhc4", MAKE_CFGVAL(0x40, 0x20, 0x18, 0x12)},
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{NULL, 0},
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};
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#endif
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