1 files changed, 0 insertions, 479 deletions

diff --git a/arch/x86/cpu/sc520/sc520_sdram.c b/arch/x86/cpu/sc520/sc520_sdram.c
deleted file mode 100644
index 9dc13342e3..0000000000
--- a/arch/x86/cpu/sc520/sc520_sdram.c
+++ /dev/null
@@ -1,479 +0,0 @@
-/*
- * (C) Copyright 2010,2011
- * Graeme Russ, <graeme.russ@gmail.com>
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-#include <common.h>
-#include <asm/io.h>
-#include <asm/processor-flags.h>
-#include <asm/arch/sc520.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-struct sc520_sdram_info {
-	u8 banks;
-	u8 columns;
-	u8 rows;
-	u8 size;
-};
-
-static void sc520_sizemem(void);
-static void sc520_set_dram_timing(void);
-static void sc520_set_dram_refresh_rate(void);
-static void sc520_enable_dram_refresh(void);
-static void sc520_enable_sdram(void);
-
-int dram_init_f(void)
-{
-	sc520_sizemem();
-	sc520_set_dram_timing();
-	sc520_set_dram_refresh_rate();
-	sc520_enable_dram_refresh();
-	sc520_enable_sdram();
-
-	return 0;
-}
-
-static inline void sc520_dummy_write(void)
-{
-	writew(0x0000, CACHELINESZ);
-}
-static inline void sc520_issue_sdram_op_mode_select(u8 command)
-{
-	writeb(command, &sc520_mmcr->drcctl);
-	sc520_dummy_write();
-}
-
-static inline int check_long(u32 test_long)
-{
-	u8 i;
-	u8 tmp_byte = (u8)(test_long & 0x000000ff);
-
-	for (i = 1; i < 4; i++) {
-		if ((u8)((test_long >> (i * 8)) & 0x000000ff) != tmp_byte)
-				return -1;
-	}
-
-	return 0;
-}
-
-static inline int write_and_test(u32 data, u32 address)
-{
-	writel(data, address);
-	if (readl(address) == data)
-		return 0; /* Good */
-	else
-		return -1; /* Bad */
-}
-
-static void sc520_enable_sdram(void)
-{
-	u32 par_config;
-
-	/* Enable Writes, Caching and Code Execution to SDRAM */
-	par_config = readl(&sc520_mmcr->par[3]);
-	par_config &= ~(SC520_PAR_EXEC_DIS |
-			SC520_PAR_CACHE_DIS |
-			SC520_PAR_WRITE_DIS);
-	writel(par_config, &sc520_mmcr->par[3]);
-
-	par_config = readl(&sc520_mmcr->par[4]);
-	par_config &= ~(SC520_PAR_EXEC_DIS |
-			SC520_PAR_CACHE_DIS |
-			SC520_PAR_WRITE_DIS);
-	writel(par_config, &sc520_mmcr->par[4]);
-}
-
-static void sc520_set_dram_timing(void)
-{
-	u8 drctmctl = 0x00;
-
-#if defined CONFIG_SYS_SDRAM_DRCTMCTL
-	/* just have your hardware designer _GIVE_ you what you need here! */
-	drctmctl = CONFIG_SYS_SDRAM_DRCTMCTL;
-#else
-	switch (CONFIG_SYS_SDRAM_RAS_CAS_DELAY) {
-	case 2:
-		break;
-	case 3:
-		drctmctl |= 0x01;
-		break;
-	case 4:
-	default:
-		drctmctl |= 0x02;
-		break;
-	}
-
-	switch (CONFIG_SYS_SDRAM_PRECHARGE_DELAY) {
-	case 2:
-		break;
-	case 3:
-		drctmctl |= 0x04;
-		break;
-	case 4:
-	default:
-		drctmctl |= 0x08;
-		break;
-
-	case 6:
-		drctmctl |= 0x0c;
-		break;
-	}
-
-	switch (CONFIG_SYS_SDRAM_CAS_LATENCY) {
-	case 2:
-		break;
-	case 3:
-	default:
-		drctmctl |= 0x10;
-		break;
-	}
-#endif
-	writeb(drctmctl, &sc520_mmcr->drctmctl);
-
-	/* Issue load mode register command */
-	sc520_issue_sdram_op_mode_select(0x03);
-}
-
-static void sc520_set_dram_refresh_rate(void)
-{
-	u8 drctl;
-
-	drctl = readb(&sc520_mmcr->drcctl);
-	drctl &= 0xcf;
-
-	switch (CONFIG_SYS_SDRAM_REFRESH_RATE) {
-	case 78:
-		break;
-	case 156:
-	default:
-		drctl |= 0x10;
-		break;
-	case 312:
-		drctl |= 0x20;
-		break;
-	case 624:
-		drctl |= 0x30;
-		break;
-	}
-
-	writeb(drctl, &sc520_mmcr->drcctl);
-}
-
-static void sc520_enable_dram_refresh(void)
-{
-	u8 drctl;
-
-	drctl = readb(&sc520_mmcr->drcctl);
-	drctl &= 0x30; /* keep refresh rate */
-	drctl |= 0x08; /* enable refresh, normal mode */
-
-	writeb(drctl, &sc520_mmcr->drcctl);
-}
-
-static void sc520_get_bank_info(int bank, struct sc520_sdram_info *bank_info)
-{
-	u32 col_data;
-	u32 row_data;
-
-	u32 drcbendadr;
-	u16 drccfg;
-
-	u8 banks = 0x00;
-	u8 columns = 0x00;
-	u8 rows = 0x00;
-
-	bank_info->banks = 0x00;
-	bank_info->columns = 0x00;
-	bank_info->rows = 0x00;
-	bank_info->size = 0x00;
-
-	if ((bank < 0) || (bank > 3)) {
-		printf("Bad Bank ID\n");
-		return;
-	}
-
-	/* Save configuration */
-	drcbendadr = readl(&sc520_mmcr->drcbendadr);
-	drccfg = readw(&sc520_mmcr->drccfg);
-
-	/* Setup SDRAM Bank to largest possible size */
-	writew(0x000b << (bank * 4), &sc520_mmcr->drccfg);
-
-	/* Set ending address for this bank */
-	writel(0x000000ff << (bank * 8), &sc520_mmcr->drcbendadr);
-
-	/* write col 11 wrap adr */
-	if (write_and_test(COL11_DATA, COL11_ADR) != 0)
-		goto restore_and_exit;
-
-	/* write col 10 wrap adr */
-	if (write_and_test(COL10_DATA, COL10_ADR) != 0)
-		goto restore_and_exit;
-
-	/* write col 9 wrap adr */
-	if (write_and_test(COL09_DATA, COL09_ADR) != 0)
-		goto restore_and_exit;
-
-	/* write col 8 wrap adr */
-	if (write_and_test(COL08_DATA, COL08_ADR) != 0)
-		goto restore_and_exit;
-
-	col_data = readl(COL11_ADR);
-
-	/* All four bytes in the read long must be the same */
-	if (check_long(col_data) < 0)
-		goto restore_and_exit;
-
-	if ((col_data >= COL08_DATA) && (col_data <= COL11_DATA))
-		columns = (u8)(col_data & 0x000000ff);
-	else
-		goto restore_and_exit;
-
-	/* write row 14 wrap adr */
-	if (write_and_test(ROW14_DATA, ROW14_ADR) != 0)
-		goto restore_and_exit;
-
-	/* write row 13 wrap adr */
-	if (write_and_test(ROW13_DATA, ROW13_ADR) != 0)
-		goto restore_and_exit;
-
-	/* write row 12 wrap adr */
-	if (write_and_test(ROW12_DATA, ROW12_ADR) != 0)
-		goto restore_and_exit;
-
-	/* write row 11 wrap adr */
-	if (write_and_test(ROW11_DATA, ROW11_ADR) != 0)
-		goto restore_and_exit;
-
-	if (write_and_test(ROW10_DATA, ROW10_ADR) != 0)
-		goto restore_and_exit;
-
-	/*
-	 * read data @ row 12 wrap adr to determine number of banks,
-	 * and read data @ row 14 wrap adr to determine number of rows.
-	 * if data @ row 12 wrap adr is not AA, 11 or 12 we have bad RAM.
-	 * if data @ row 12 wrap == AA, we only have 2 banks, NOT 4
-	 * if data @ row 12 wrap == 11 or 12, we have 4 banks,
-	 */
-	row_data = readl(ROW12_ADR);
-
-	/* All four bytes in the read long must be the same */
-	if (check_long(row_data) != 0)
-		goto restore_and_exit;
-
-	switch (row_data) {
-	case ROW10_DATA:
-		banks = 2;
-		break;
-
-	case ROW11_DATA:
-	case ROW12_DATA:
-		banks = 4;
-		break;
-
-	default:
-		goto restore_and_exit;
-	}
-
-	row_data = readl(ROW14_ADR);
-
-	/* All four bytes in the read long must be the same */
-	if (check_long(row_data) != 0)
-		goto restore_and_exit;
-
-	switch (row_data) {
-	case ROW11_DATA:
-	case ROW12_DATA:
-	case ROW13_DATA:
-	case ROW14_DATA:
-		rows = (u8)(row_data & 0x000000ff);
-		break;
-
-	default:
-		goto restore_and_exit;
-	}
-
-	bank_info->banks = banks;
-	bank_info->columns = columns;
-	bank_info->rows = rows;
-
-	if ((bank_info->banks != 0) &&
-	    (bank_info->columns != 0) &&
-	    (bank_info->rows != 0)) {
-		bank_info->size = bank_info->rows;
-		bank_info->size >>= (11 - bank_info->columns);
-		bank_info->size++;
-	}
-
-restore_and_exit:
-	/* Restore configuration */
-	writel(drcbendadr, &sc520_mmcr->drcbendadr);
-	writew(drccfg, &sc520_mmcr->drccfg);
-}
-
-static void sc520_setup_sizemem(void)
-{
-	u8 i;
-
-	/* Disable write buffer */
-	writeb(0x00, &sc520_mmcr->dbctl);
-
-	/* Disable ECC */
-	writeb(0x00, &sc520_mmcr->eccctl);
-
-	/* Set slowest SDRAM timing */
-	writeb(0x1e, &sc520_mmcr->drctmctl);
-
-	/* Issue a NOP to all SDRAM banks */
-	sc520_issue_sdram_op_mode_select(0x01);
-
-	/* Delay for 100 microseconds */
-	udelay(100);
-
-	/* Issue 'All Banks Precharge' command */
-	sc520_issue_sdram_op_mode_select(0x02);
-
-	/* Issue 2 'Auto Refresh Enable' command */
-	sc520_issue_sdram_op_mode_select(0x04);
-	sc520_dummy_write();
-
-	/* Issue 'Load Mode Register' command */
-	sc520_issue_sdram_op_mode_select(0x03);
-
-	/* Issue 8 more 'Auto Refresh Enable' commands */
-	sc520_issue_sdram_op_mode_select(0x04);
-	for (i = 0; i < 7; i++)
-		sc520_dummy_write();
-
-	/* Set control register to 'Normal Mode' */
-	writeb(0x00, &sc520_mmcr->drcctl);
-}
-
-static void sc520_sizemem(void)
-{
-	struct sc520_sdram_info sdram_info[4];
-	u8 bank_config = 0x00;
-	u8 end_addr = 0x00;
-	u16 drccfg = 0x0000;
-	u32 drcbendadr = 0x00000000;
-	u8 i;
-
-	/* Use PARs to disable caching of maximum allowable 256MB SDRAM */
-	writel(SC520_SDRAM1_PAR | SC520_PAR_CACHE_DIS, &sc520_mmcr->par[3]);
-	writel(SC520_SDRAM2_PAR | SC520_PAR_CACHE_DIS, &sc520_mmcr->par[4]);
-
-	sc520_setup_sizemem();
-
-	gd->ram_size = 0;
-
-	/* Size each SDRAM bank */
-	for (i = 0; i <= 3; i++) {
-		sc520_get_bank_info(i, &sdram_info[i]);
-
-		if (sdram_info[i].banks != 0) {
-			/* Update Configuration register */
-			bank_config = sdram_info[i].columns - 8;
-
-			if (sdram_info[i].banks == 4)
-				bank_config |= 0x08;
-
-			drccfg |= bank_config << (i * 4);
-
-			/* Update End Address register */
-			end_addr += sdram_info[i].size;
-			drcbendadr |= (end_addr | 0x80) << (i * 8);
-
-			gd->ram_size += sdram_info[i].size << 22;
-		}
-
-		/* Issue 'All Banks Precharge' command */
-		sc520_issue_sdram_op_mode_select(0x02);
-
-		/* Set control register to 'Normal Mode' */
-		writeb(0x00, &sc520_mmcr->drcctl);
-	}
-
-	writel(drcbendadr, &sc520_mmcr->drcbendadr);
-	writew(drccfg, &sc520_mmcr->drccfg);
-
-	/* Clear PARs preventing caching of SDRAM */
-	writel(0x00000000, &sc520_mmcr->par[3]);
-	writel(0x00000000, &sc520_mmcr->par[4]);
-}
-
-int dram_init(void)
-{
-	ulong dram_ctrl;
-	ulong dram_present = 0x00000000;
-
-	/*
-	 * We read-back the configuration of the dram
-	 * controller that the assembly code wrote
-	 */
-	dram_ctrl = readl(&sc520_mmcr->drcbendadr);
-
-	gd->bd->bi_dram[0].start = 0;
-	if (dram_ctrl & 0x80) {
-		/* bank 0 enabled */
-		gd->bd->bi_dram[1].start = (dram_ctrl & 0x7f) << 22;
-		dram_present = gd->bd->bi_dram[1].start;
-		gd->bd->bi_dram[0].size = gd->bd->bi_dram[1].start;
-	} else {
-		gd->bd->bi_dram[0].size = 0;
-		gd->bd->bi_dram[1].start = gd->bd->bi_dram[0].start;
-	}
-
-	if (dram_ctrl & 0x8000) {
-		/* bank 1 enabled */
-		gd->bd->bi_dram[2].start = (dram_ctrl & 0x7f00) << 14;
-		dram_present = gd->bd->bi_dram[2].start;
-		gd->bd->bi_dram[1].size = gd->bd->bi_dram[2].start -
-				gd->bd->bi_dram[1].start;
-	} else {
-		gd->bd->bi_dram[1].size = 0;
-		gd->bd->bi_dram[2].start = gd->bd->bi_dram[1].start;
-	}
-
-	if (dram_ctrl & 0x800000) {
-		/* bank 2 enabled */
-		gd->bd->bi_dram[3].start = (dram_ctrl & 0x7f0000) << 6;
-		dram_present = gd->bd->bi_dram[3].start;
-		gd->bd->bi_dram[2].size = gd->bd->bi_dram[3].start -
-				gd->bd->bi_dram[2].start;
-	} else {
-		gd->bd->bi_dram[2].size = 0;
-		gd->bd->bi_dram[3].start = gd->bd->bi_dram[2].start;
-	}
-
-	if (dram_ctrl & 0x80000000) {
-		/* bank 3 enabled */
-		dram_present  = (dram_ctrl & 0x7f000000) >> 2;
-		gd->bd->bi_dram[3].size = dram_present -
-				gd->bd->bi_dram[3].start;
-	} else {
-		gd->bd->bi_dram[3].size = 0;
-	}
-
-	gd->ram_size = dram_present;
-
-	return 0;
-}