summaryrefslogtreecommitdiffstats
path: root/board/jse/sdram.c
diff options
context:
space:
mode:
Diffstat (limited to 'board/jse/sdram.c')
-rw-r--r--board/jse/sdram.c169
1 files changed, 0 insertions, 169 deletions
diff --git a/board/jse/sdram.c b/board/jse/sdram.c
deleted file mode 100644
index 5639beddce..0000000000
--- a/board/jse/sdram.c
+++ /dev/null
@@ -1,169 +0,0 @@
-/*
- * Copyright (c) 2004 Picture Elements, Inc.
- * Stephen Williams (steve@icarus.com)
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-#include <asm/ppc4xx.h>
-#include <asm/processor.h>
-
-# define SDRAM_LEN 0x08000000
-
-/*
- * this is even after checkboard. It returns the size of the SDRAM
- * that we have installed. This function is called by board_init_f
- * in arch/powerpc/lib/board.c to initialize the memory and return what I
- * found.
- */
-phys_size_t initdram (int board_type)
-{
- /* Configure the SDRAMS */
-
- /* disable memory controller */
- mtdcr (SDRAM0_CFGADDR, SDRAM0_CFG);
- mtdcr (SDRAM0_CFGDATA, 0x00000000);
-
- udelay (500);
-
- /* Clear SDRAM0_BESR0 (Bus Error Syndrome Register) */
- mtdcr (SDRAM0_CFGADDR, SDRAM0_BESR0);
- mtdcr (SDRAM0_CFGDATA, 0xffffffff);
-
- /* Clear SDRAM0_BESR1 (Bus Error Syndrome Register) */
- mtdcr (SDRAM0_CFGADDR, SDRAM0_BESR1);
- mtdcr (SDRAM0_CFGDATA, 0xffffffff);
-
- /* Clear SDRAM0_ECCCFG (disable ECC) */
- mtdcr (SDRAM0_CFGADDR, SDRAM0_ECCCFG);
- mtdcr (SDRAM0_CFGDATA, 0x00000000);
-
- /* Clear SDRAM0_ECCESR (ECC Error Syndrome Register) */
- mtdcr (SDRAM0_CFGADDR, SDRAM0_ECCESR);
- mtdcr (SDRAM0_CFGDATA, 0xffffffff);
-
- /* Timing register: CASL=2, PTA=2, CTP=2, LDF=1, RFTA=5, RCD=2 */
- mtdcr (SDRAM0_CFGADDR, SDRAM0_TR);
- mtdcr (SDRAM0_CFGDATA, 0x010a4016);
-
- /* Memory Bank 0 Config == BA=0x00000000, SZ=64M, AM=3, BE=1 */
- mtdcr (SDRAM0_CFGADDR, SDRAM0_B0CR);
- mtdcr (SDRAM0_CFGDATA, 0x00084001);
-
- /* Memory Bank 1 Config == BA=0x04000000, SZ=64M, AM=3, BE=1 */
- mtdcr (SDRAM0_CFGADDR, SDRAM0_B1CR);
- mtdcr (SDRAM0_CFGDATA, 0x04084001);
-
- /* Memory Bank 2 Config == BE=0 */
- mtdcr (SDRAM0_CFGADDR, SDRAM0_B2CR);
- mtdcr (SDRAM0_CFGDATA, 0x00000000);
-
- /* Memory Bank 3 Config == BE=0 */
- mtdcr (SDRAM0_CFGADDR, SDRAM0_B3CR);
- mtdcr (SDRAM0_CFGDATA, 0x00000000);
-
- /* refresh timer = 0x400 */
- mtdcr (SDRAM0_CFGADDR, SDRAM0_RTR);
- mtdcr (SDRAM0_CFGDATA, 0x04000000);
-
- /* Power management idle timer set to the default. */
- mtdcr (SDRAM0_CFGADDR, SDRAM0_PMIT);
- mtdcr (SDRAM0_CFGDATA, 0x07c00000);
-
- udelay (500);
-
- /* Enable banks (DCE=1, BPRF=1, ECCDD=1, EMDUL=1) */
- mtdcr (SDRAM0_CFGADDR, SDRAM0_CFG);
- mtdcr (SDRAM0_CFGDATA, 0x80e00000);
-
- return SDRAM_LEN;
-}
-
-/*
- * The U-Boot core, as part of the initialization to prepare for
- * loading the monitor into SDRAM, requests of this function that the
- * memory be tested. Return 0 if the memory tests OK.
- */
-int testdram (void)
-{
- unsigned long idx;
- unsigned val;
- unsigned errors;
- volatile unsigned long *sdram;
-
-#ifdef DEBUG
- printf ("SDRAM Controller Registers --\n");
-
- mtdcr (SDRAM0_CFGADDR, SDRAM0_CFG);
- val = mfdcr (SDRAM0_CFGDATA);
- printf (" SDRAM0_CFG : 0x%08x\n", val);
-
- mtdcr (SDRAM0_CFGADDR, 0x24);
- val = mfdcr (SDRAM0_CFGDATA);
- printf (" SDRAM0_STATUS: 0x%08x\n", val);
-
- mtdcr (SDRAM0_CFGADDR, SDRAM0_B0CR);
- val = mfdcr (SDRAM0_CFGDATA);
- printf (" SDRAM0_B0CR : 0x%08x\n", val);
-
- mtdcr (SDRAM0_CFGADDR, SDRAM0_B1CR);
- val = mfdcr (SDRAM0_CFGDATA);
- printf (" SDRAM0_B1CR : 0x%08x\n", val);
-
- mtdcr (SDRAM0_CFGADDR, SDRAM0_TR);
- val = mfdcr (SDRAM0_CFGDATA);
- printf (" SDRAM0_TR : 0x%08x\n", val);
-
- mtdcr (SDRAM0_CFGADDR, SDRAM0_RTR);
- val = mfdcr (SDRAM0_CFGDATA);
- printf (" SDRAM0_RTR : 0x%08x\n", val);
-#endif
-
- /* Wait for memory to be ready by testing MRSCMPbit
- bit. Really, there should already have been plenty of time,
- given it was started long ago. But, best to check. */
- for (idx = 0; idx < 1000000; idx += 1) {
- mtdcr (SDRAM0_CFGADDR, 0x24);
- val = mfdcr (SDRAM0_CFGDATA);
- if (val & 0x80000000)
- break;
- }
-
- if (!(val & 0x80000000)) {
- printf ("SDRAM ERROR: SDRAM0_STATUS never set!\n");
- return 1;
- }
-
- /* Start memory test. */
- printf ("test: %u MB - ", SDRAM_LEN / 1048576);
-
- sdram = (unsigned long *) CONFIG_SYS_SDRAM_BASE;
-
- printf ("write - ");
- for (idx = 2; idx < SDRAM_LEN / 4; idx += 2) {
- sdram[idx + 0] = idx;
- sdram[idx + 1] = ~idx;
- }
-
- printf ("read - ");
- errors = 0;
- for (idx = 2; idx < SDRAM_LEN / 4; idx += 2) {
- if (sdram[idx + 0] != idx)
- errors += 1;
- if (sdram[idx + 1] != ~idx)
- errors += 1;
- if (errors > 0)
- break;
- }
-
- if (errors > 0) {
- printf ("NOT OK\n");
- printf ("FIRST ERROR at %p: 0x%08lx:0x%08lx != 0x%08lx:0x%08lx\n",
- sdram + idx, sdram[idx + 0], sdram[idx + 1], idx, ~idx);
- return 1;
- }
-
- printf ("ok\n");
- return 0;
-}
OpenPOWER on IntegriCloud