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#include <common.h>
#include <malloc.h>
#include <envfs.h>
#include <init.h>
#include <io.h>
#include <fs.h>
#include <net/designware.h>
#include <linux/clkdev.h>
#include <linux/clk.h>
#include <linux/stat.h>
#include <asm/memory.h>
#include <mach/system-manager.h>
#include <mach/socfpga-regs.h>
#include <mach/nic301.h>
#define SYSMGR_SDMMCGRP_CTRL_REG (CYCLONE5_SYSMGR_ADDRESS + 0x108)
#define SYSMGR_SDMMC_CTRL_SMPLSEL(smplsel) (((smplsel) & 0x7) << 3)
#define SYSMGR_SDMMC_CTRL_DRVSEL(drvsel) ((drvsel) & 0x7)
static int socfpga_detect_sdram(void)
{
void __iomem *base = (void *)CYCLONE5_SDR_ADDRESS;
uint32_t dramaddrw, ctrlwidth, memsize;
int colbits, rowbits, bankbits;
int width_bytes;
dramaddrw = readl(base + 0x5000 + 0x2c);
colbits = dramaddrw & 0x1f;
rowbits = (dramaddrw >> 5) & 0x1f;
bankbits = (dramaddrw >> 10) & 0x7;
ctrlwidth = readl(base + 0x5000 + 0x60);
switch (ctrlwidth & 0x3) {
default:
case 0:
width_bytes = 1;
break;
case 1:
width_bytes = 2;
break;
case 2:
width_bytes = 4;
break;
}
memsize = (1 << colbits) * (1 << rowbits) * (1 << bankbits) * width_bytes;
pr_debug("%s: colbits: %d rowbits: %d bankbits: %d width: %d => memsize: 0x%08x\n",
__func__, colbits, rowbits, bankbits, width_bytes, memsize);
arm_add_mem_device("ram0", 0x0, memsize);
return 0;
}
static int socfpga_init(void)
{
uint32_t val;
/* Clearing emac0 PHY interface select to 0 */
val = readl(CONFIG_SYSMGR_EMAC_CTRL);
val &= ~(SYSMGR_EMACGRP_CTRL_PHYSEL_MASK << SYSMGR_EMACGRP_CTRL_PHYSEL1_LSB);
val |= SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RGMII << SYSMGR_EMACGRP_CTRL_PHYSEL1_LSB;
writel(val, CONFIG_SYSMGR_EMAC_CTRL);
writel(SYSMGR_SDMMC_CTRL_DRVSEL(3) | SYSMGR_SDMMC_CTRL_SMPLSEL(0),
SYSMGR_SDMMCGRP_CTRL_REG);
nic301_slave_ns();
socfpga_detect_sdram();
return 0;
}
core_initcall(socfpga_init);
#if defined(CONFIG_DEFAULT_ENVIRONMENT)
static int socfpga_env_init(void)
{
struct stat s;
char *diskdev, *partname;
int ret;
diskdev = "mmc0";
device_detect_by_name(diskdev);
partname = asprintf("/dev/%s.1", diskdev);
ret = stat(partname, &s);
if (ret) {
printf("no %s. using default env\n", diskdev);
goto out_free;
}
mkdir("/boot", 0666);
ret = mount(partname, "fat", "/boot", NULL);
if (ret) {
printf("failed to mount %s\n", diskdev);
goto out_free;
}
default_environment_path_set("/boot/barebox.env");
out_free:
free(partname);
return 0;
}
late_initcall(socfpga_env_init);
#endif
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