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authorH. Nikolaus Schaller <hns@goldelico.com>2012-03-26 20:55:28 +0200
committerH. Nikolaus Schaller <hns@goldelico.com>2012-03-26 20:55:28 +0200
commit92988a21ad4c4c9504295ccb580c9f806134471b (patch)
tree5effc9f14170112450de05c67dafbe8d5034d595 /arch/arm/cpu/armv7/omap3/sdrc.c
parentca2b506783b676c95762c54ea24dcfdaae1947c9 (diff)
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added boot script files to repository
Diffstat (limited to 'arch/arm/cpu/armv7/omap3/sdrc.c')
-rw-r--r--arch/arm/cpu/armv7/omap3/sdrc.c217
1 files changed, 0 insertions, 217 deletions
diff --git a/arch/arm/cpu/armv7/omap3/sdrc.c b/arch/arm/cpu/armv7/omap3/sdrc.c
deleted file mode 100644
index 2a7970b..0000000
--- a/arch/arm/cpu/armv7/omap3/sdrc.c
+++ /dev/null
@@ -1,217 +0,0 @@
-/*
- * Functions related to OMAP3 SDRC.
- *
- * This file has been created after exctracting and consolidating
- * the SDRC related content from mem.c and board.c, also created
- * generic init function (mem_init).
- *
- * Copyright (C) 2004-2010
- * Texas Instruments Incorporated - http://www.ti.com/
- *
- * Author :
- * Vaibhav Hiremath <hvaibhav@ti.com>
- *
- * Original implementation by (mem.c, board.c) :
- * Sunil Kumar <sunilsaini05@gmail.com>
- * Shashi Ranjan <shashiranjanmca05@gmail.com>
- * Manikandan Pillai <mani.pillai@ti.com>
- *
- * 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/arch/mem.h>
-#include <asm/arch/sys_proto.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-extern omap3_sysinfo sysinfo;
-
-static struct sdrc *sdrc_base = (struct sdrc *)OMAP34XX_SDRC_BASE;
-
-/*
- * is_mem_sdr -
- * - Return 1 if mem type in use is SDR
- */
-u32 is_mem_sdr(void)
-{
- if (readl(&sdrc_base->cs[CS0].mr) == SDRC_MR_0_SDR)
- return 1;
- return 0;
-}
-
-/*
- * make_cs1_contiguous -
- * - For es2 and above remap cs1 behind cs0 to allow command line
- * mem=xyz use all memory with out discontinuous support compiled in.
- * Could do it at the ATAG, but there really is two banks...
- * - Called as part of 2nd phase DDR init.
- */
-void make_cs1_contiguous(void)
-{
- u32 size, a_add_low, a_add_high;
-
- size = get_sdr_cs_size(CS0);
- size >>= 25; /* divide by 32 MiB to find size to offset CS1 */
- a_add_high = (size & 3) << 8; /* set up low field */
- a_add_low = (size & 0x3C) >> 2; /* set up high field */
- writel((a_add_high | a_add_low), &sdrc_base->cs_cfg);
-
-}
-
-
-/*
- * get_sdr_cs_size -
- * - Get size of chip select 0/1
- */
-u32 get_sdr_cs_size(u32 cs)
-{
- u32 size;
-
- /* get ram size field */
- size = readl(&sdrc_base->cs[cs].mcfg) >> 8;
- size &= 0x3FF; /* remove unwanted bits */
- size <<= 21; /* multiply by 2 MiB to find size in MB */
- return size;
-}
-
-/*
- * get_sdr_cs_offset -
- * - Get offset of cs from cs0 start
- */
-u32 get_sdr_cs_offset(u32 cs)
-{
- u32 offset;
-
- if (!cs)
- return 0;
-
- offset = readl(&sdrc_base->cs_cfg);
- offset = (offset & 15) << 27 | (offset & 0x30) << 17;
-
- return offset;
-}
-
-/*
- * do_sdrc_init -
- * - Initialize the SDRAM for use.
- * - code called once in C-Stack only context for CS0 and a possible 2nd
- * time depending on memory configuration from stack+global context
- */
-void do_sdrc_init(u32 cs, u32 early)
-{
- struct sdrc_actim *sdrc_actim_base0, *sdrc_actim_base1;
-
- if (early) {
- /* reset sdrc controller */
- writel(SOFTRESET, &sdrc_base->sysconfig);
- wait_on_value(RESETDONE, RESETDONE, &sdrc_base->status,
- 12000000);
- writel(0, &sdrc_base->sysconfig);
-
- /* setup sdrc to ball mux */
- writel(SDRC_SHARING, &sdrc_base->sharing);
-
- /* Disable Power Down of CKE cuz of 1 CKE on combo part */
- writel(WAKEUPPROC | SRFRONRESET | PAGEPOLICY_HIGH,
- &sdrc_base->power);
-
- writel(ENADLL | DLLPHASE_90, &sdrc_base->dlla_ctrl);
- sdelay(0x20000);
- }
-
- /*
- * SDRC timings are set up by x-load or config header
- * We don't need to redo them here.
- * Older x-loads configure only CS0
- * configure CS1 to handle this ommission
- */
- if (cs) {
- sdrc_actim_base0 = (struct sdrc_actim *)SDRC_ACTIM_CTRL0_BASE;
- sdrc_actim_base1 = (struct sdrc_actim *)SDRC_ACTIM_CTRL1_BASE;
- writel(readl(&sdrc_base->cs[CS0].mcfg),
- &sdrc_base->cs[CS1].mcfg);
- writel(readl(&sdrc_base->cs[CS0].rfr_ctrl),
- &sdrc_base->cs[CS1].rfr_ctrl);
- writel(readl(&sdrc_actim_base0->ctrla),
- &sdrc_actim_base1->ctrla);
- writel(readl(&sdrc_actim_base0->ctrlb),
- &sdrc_actim_base1->ctrlb);
-
- writel(CMD_NOP, &sdrc_base->cs[cs].manual);
- writel(CMD_PRECHARGE, &sdrc_base->cs[cs].manual);
- writel(CMD_AUTOREFRESH, &sdrc_base->cs[cs].manual);
- writel(CMD_AUTOREFRESH, &sdrc_base->cs[cs].manual);
- writel(readl(&sdrc_base->cs[CS0].mr),
- &sdrc_base->cs[CS1].mr);
- }
-
- /*
- * Test ram in this bank
- * Disable if bad or not present
- */
- if (!mem_ok(cs))
- writel(0, &sdrc_base->cs[cs].mcfg);
-}
-
-/*
- * dram_init -
- * - Sets uboots idea of sdram size
- */
-int dram_init(void)
-{
- unsigned int size0 = 0, size1 = 0;
-
- size0 = get_sdr_cs_size(CS0);
- /*
- * If a second bank of DDR is attached to CS1 this is
- * where it can be started. Early init code will init
- * memory on CS0.
- */
- if ((sysinfo.mtype == DDR_COMBO) || (sysinfo.mtype == DDR_STACKED)) {
- do_sdrc_init(CS1, NOT_EARLY);
- make_cs1_contiguous();
-
- size1 = get_sdr_cs_size(CS1);
- }
- gd->ram_size = size0 + size1;
-
- return 0;
-}
-
-void dram_init_banksize (void)
-{
- unsigned int size0 = 0, size1 = 0;
-
- size0 = get_sdr_cs_size(CS0);
- size1 = get_sdr_cs_size(CS1);
-
- gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
- gd->bd->bi_dram[0].size = size0;
- gd->bd->bi_dram[1].start = PHYS_SDRAM_1 + get_sdr_cs_offset(CS1);
- gd->bd->bi_dram[1].size = size1;
-}
-
-/*
- * mem_init -
- * - Init the sdrc chip,
- * - Selects CS0 and CS1,
- */
-void mem_init(void)
-{
- /* only init up first bank here */
- do_sdrc_init(CS0, EARLY_INIT);
-}