1 /* 2 * SPDX-License-Identifier: GPL-2.0+ 3 */ 4 #include <asm/io.h> 5 #include <asm/arch/mem.h> 6 #include <asm/arch/sys_proto.h> 7 #include <jffs2/load_kernel.h> 8 #include <linux/mtd/nand.h> 9 #include "igep00x0.h" 10 11 /* 12 * Routine: get_board_mem_timings 13 * Description: If we use SPL then there is no x-loader nor config header 14 * so we have to setup the DDR timings ourself on both banks. 15 */ 16 void get_board_mem_timings(struct board_sdrc_timings *timings) 17 { 18 int mfr, id, err = identify_nand_chip(&mfr, &id); 19 20 timings->mr = MICRON_V_MR_165; 21 if (!err) { 22 switch (mfr) { 23 case NAND_MFR_HYNIX: 24 timings->mcfg = HYNIX_V_MCFG_200(256 << 20); 25 timings->ctrla = HYNIX_V_ACTIMA_200; 26 timings->ctrlb = HYNIX_V_ACTIMB_200; 27 break; 28 case NAND_MFR_MICRON: 29 timings->mcfg = MICRON_V_MCFG_200(256 << 20); 30 timings->ctrla = MICRON_V_ACTIMA_200; 31 timings->ctrlb = MICRON_V_ACTIMB_200; 32 break; 33 default: 34 /* Should not happen... */ 35 break; 36 } 37 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz; 38 gpmc_cs0_flash = MTD_DEV_TYPE_NAND; 39 } else { 40 if (get_cpu_family() == CPU_OMAP34XX) { 41 timings->mcfg = NUMONYX_V_MCFG_165(256 << 20); 42 timings->ctrla = NUMONYX_V_ACTIMA_165; 43 timings->ctrlb = NUMONYX_V_ACTIMB_165; 44 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz; 45 } else { 46 timings->mcfg = NUMONYX_V_MCFG_200(256 << 20); 47 timings->ctrla = NUMONYX_V_ACTIMA_200; 48 timings->ctrlb = NUMONYX_V_ACTIMB_200; 49 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz; 50 } 51 gpmc_cs0_flash = MTD_DEV_TYPE_ONENAND; 52 } 53 } 54 55 #ifdef CONFIG_SPL_OS_BOOT 56 int spl_start_uboot(void) 57 { 58 /* break into full u-boot on 'c' */ 59 if (serial_tstc() && serial_getc() == 'c') 60 return 1; 61 62 return 0; 63 } 64 #endif 65