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Diffstat (limited to 'board/lwmon5/sdram.c')
-rw-r--r-- | board/lwmon5/sdram.c | 247 |
1 files changed, 0 insertions, 247 deletions
diff --git a/board/lwmon5/sdram.c b/board/lwmon5/sdram.c deleted file mode 100644 index 5dfbb0b..0000000 --- a/board/lwmon5/sdram.c +++ /dev/null @@ -1,247 +0,0 @@ -/* - * (C) Copyright 2006 - * Sylvie Gohl, AMCC/IBM, gohl.sylvie@fr.ibm.com - * Jacqueline Pira-Ferriol, AMCC/IBM, jpira-ferriol@fr.ibm.com - * Thierry Roman, AMCC/IBM, thierry_roman@fr.ibm.com - * Alain Saurel, AMCC/IBM, alain.saurel@fr.ibm.com - * Robert Snyder, AMCC/IBM, rob.snyder@fr.ibm.com - * - * (C) Copyright 2007-2013 - * Stefan Roese, DENX Software Engineering, sr@denx.de. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -/* define DEBUG for debugging output (obviously ;-)) */ -#if 0 -#define DEBUG -#endif - -#include <common.h> -#include <asm/processor.h> -#include <asm/mmu.h> -#include <asm/io.h> -#include <asm/cache.h> -#include <asm/ppc440.h> -#include <watchdog.h> - -/* - * This DDR2 setup code can dynamically setup the TLB entries for the DDR2 memory - * region. Right now the cache should still be disabled in U-Boot because of the - * EMAC driver, that need it's buffer descriptor to be located in non cached - * memory. - * - * If at some time this restriction doesn't apply anymore, just define - * CONFIG_4xx_DCACHE in the board config file and this code should setup - * everything correctly. - */ -#ifdef CONFIG_4xx_DCACHE -#define MY_TLB_WORD2_I_ENABLE 0 /* enable caching on SDRAM */ -#else -#define MY_TLB_WORD2_I_ENABLE TLB_WORD2_I_ENABLE /* disable caching on SDRAM */ -#endif - -/*-----------------------------------------------------------------------------+ - * Prototypes - *-----------------------------------------------------------------------------*/ -extern int denali_wait_for_dlllock(void); -extern void denali_core_search_data_eye(void); -extern void dcbz_area(u32 start_address, u32 num_bytes); - -static u32 is_ecc_enabled(void) -{ - u32 val; - - mfsdram(DDR0_22, val); - val &= DDR0_22_CTRL_RAW_MASK; - if (val) - return 1; - else - return 0; -} - -void board_add_ram_info(int use_default) -{ - PPC4xx_SYS_INFO board_cfg; - u32 val; - - if (is_ecc_enabled()) - puts(" (ECC"); - else - puts(" (ECC not"); - - get_sys_info(&board_cfg); - printf(" enabled, %ld MHz", (board_cfg.freqPLB * 2) / 1000000); - - mfsdram(DDR0_03, val); - val = DDR0_03_CASLAT_DECODE(val); - printf(", CL%d)", val); -} - -#ifdef CONFIG_DDR_ECC -static void wait_ddr_idle(void) -{ - /* - * Controller idle status cannot be determined for Denali - * DDR2 code. Just return here. - */ -} - -static void program_ecc(u32 start_address, - u32 num_bytes, - u32 tlb_word2_i_value) -{ - u32 val; - u32 current_addr = start_address; - u32 size; - int bytes_remaining; - - sync(); - wait_ddr_idle(); - - /* - * Because of 440EPx errata CHIP 11, we don't touch the last 256 - * bytes of SDRAM. - */ - bytes_remaining = num_bytes - CONFIG_SYS_MEM_TOP_HIDE; - - /* - * We have to write the ECC bytes by zeroing and flushing in smaller - * steps, since the whole 256MByte takes too long for the external - * watchdog. - */ - while (bytes_remaining > 0) { - size = min((64 << 20), bytes_remaining); - - /* Write zero's to SDRAM */ - dcbz_area(current_addr, size); - - /* Write modified dcache lines back to memory */ - clean_dcache_range(current_addr, current_addr + size); - - current_addr += 64 << 20; - bytes_remaining -= 64 << 20; - WATCHDOG_RESET(); - } - - sync(); - wait_ddr_idle(); - - /* Clear error status */ - mfsdram(DDR0_00, val); - mtsdram(DDR0_00, val | DDR0_00_INT_ACK_ALL); - - /* Set 'int_mask' parameter to functionnal value */ - mfsdram(DDR0_01, val); - mtsdram(DDR0_01, ((val &~ DDR0_01_INT_MASK_MASK) | DDR0_01_INT_MASK_ALL_OFF)); - - sync(); - wait_ddr_idle(); -} -#endif - -/************************************************************************* - * - * initdram -- 440EPx's DDR controller is a DENALI Core - * - ************************************************************************/ -phys_size_t initdram (int board_type) -{ -#if defined(CONFIG_SPL_BUILD) || !defined(CONFIG_LCD4_LWMON5) - /* CL=4 */ - mtsdram(DDR0_02, 0x00000000); - - mtsdram(DDR0_00, 0x0000190A); - mtsdram(DDR0_01, 0x01000000); - mtsdram(DDR0_03, 0x02040803); /* A suitable burst length was taken. CAS is right for our board */ - - mtsdram(DDR0_04, 0x0B030300); - mtsdram(DDR0_05, 0x02020308); - mtsdram(DDR0_06, 0x0003C812); - mtsdram(DDR0_07, 0x00090100); - mtsdram(DDR0_08, 0x03c80001); - mtsdram(DDR0_09, 0x00011D5F); - mtsdram(DDR0_10, 0x00000100); - mtsdram(DDR0_11, 0x000CC800); - mtsdram(DDR0_12, 0x00000003); - mtsdram(DDR0_14, 0x00000000); - mtsdram(DDR0_17, 0x1e000000); - mtsdram(DDR0_18, 0x1e1e1e1e); - mtsdram(DDR0_19, 0x1e1e1e1e); - mtsdram(DDR0_20, 0x0B0B0B0B); - mtsdram(DDR0_21, 0x0B0B0B0B); -#ifdef CONFIG_DDR_ECC - mtsdram(DDR0_22, 0x00267F0B | DDR0_22_CTRL_RAW_ECC_ENABLE); /* enable ECC */ -#else - mtsdram(DDR0_22, 0x00267F0B); -#endif - - mtsdram(DDR0_23, 0x01000000); - mtsdram(DDR0_24, 0x01010001); - - mtsdram(DDR0_26, 0x2D93028A); - mtsdram(DDR0_27, 0x0784682B); - - mtsdram(DDR0_28, 0x00000080); - mtsdram(DDR0_31, 0x00000000); - mtsdram(DDR0_42, 0x01000008); - - mtsdram(DDR0_43, 0x050A0200); - mtsdram(DDR0_44, 0x00000005); - mtsdram(DDR0_02, 0x00000001); /* Activate the denali core */ - - denali_wait_for_dlllock(); - -#if defined(CONFIG_DDR_DATA_EYE) - /* -----------------------------------------------------------+ - * Perform data eye search if requested. - * ----------------------------------------------------------*/ - program_tlb(0, CONFIG_SYS_SDRAM_BASE, CONFIG_SYS_MBYTES_SDRAM << 20, - TLB_WORD2_I_ENABLE); - denali_core_search_data_eye(); - remove_tlb(CONFIG_SYS_SDRAM_BASE, CONFIG_SYS_MBYTES_SDRAM << 20); -#endif - - /* - * Program tlb entries for this size (dynamic) - */ - program_tlb(0, CONFIG_SYS_SDRAM_BASE, CONFIG_SYS_MBYTES_SDRAM << 20, - MY_TLB_WORD2_I_ENABLE); - -#if defined(CONFIG_DDR_ECC) -#if defined(CONFIG_4xx_DCACHE) - /* - * If ECC is enabled, initialize the parity bits. - */ - program_ecc(0, CONFIG_SYS_MBYTES_SDRAM << 20, 0); -#else /* CONFIG_4xx_DCACHE */ - /* - * Setup 2nd TLB with same physical address but different virtual address - * with cache enabled. This is done for fast ECC generation. - */ - program_tlb(0, CONFIG_SYS_DDR_CACHED_ADDR, CONFIG_SYS_MBYTES_SDRAM << 20, 0); - - /* - * If ECC is enabled, initialize the parity bits. - */ - program_ecc(CONFIG_SYS_DDR_CACHED_ADDR, CONFIG_SYS_MBYTES_SDRAM << 20, 0); - - /* - * Now after initialization (auto-calibration and ECC generation) - * remove the TLB entries with caches enabled and program again with - * desired cache functionality - */ - remove_tlb(CONFIG_SYS_DDR_CACHED_ADDR, CONFIG_SYS_MBYTES_SDRAM << 20); -#endif /* CONFIG_4xx_DCACHE */ -#endif /* CONFIG_DDR_ECC */ - - /* - * Clear possible errors resulting from data-eye-search. - * If not done, then we could get an interrupt later on when - * exceptions are enabled. - */ - set_mcsr(get_mcsr()); -#endif /* CONFIG_SPL_BUILD */ - - return (CONFIG_SYS_MBYTES_SDRAM << 20); -} |