+// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2010-2011 Calxeda, Inc.
- *
- * 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 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, see <http://www.gnu.org/licenses/>.
*/
#include <common.h>
#include <ahci.h>
+#include <cpu_func.h>
+#include <env.h>
#include <netdev.h>
#include <scsi.h>
-#include <asm/sizes.h>
+#include <linux/sizes.h>
+#include <asm/io.h>
+
+#define HB_AHCI_BASE 0xffe08000
+
+#define HB_SCU_A9_PWR_STATUS 0xfff10008
+#define HB_SREG_A9_PWR_REQ 0xfff3cf00
+#define HB_SREG_A9_BOOT_SRC_STAT 0xfff3cf04
+#define HB_SREG_A9_PWRDOM_STAT 0xfff3cf20
+#define HB_SREG_A15_PWR_CTRL 0xfff3c200
+
+#define HB_PWR_SUSPEND 0
+#define HB_PWR_SOFT_RESET 1
+#define HB_PWR_HARD_RESET 2
+#define HB_PWR_SHUTDOWN 3
+
+#define PWRDOM_STAT_SATA 0x80000000
+#define PWRDOM_STAT_PCI 0x40000000
+#define PWRDOM_STAT_EMMC 0x20000000
+
+#define HB_SCU_A9_PWR_NORMAL 0
+#define HB_SCU_A9_PWR_DORMANT 2
+#define HB_SCU_A9_PWR_OFF 3
DECLARE_GLOBAL_DATA_PTR;
+void cphy_disable_overrides(void);
+
/*
* Miscellaneous platform dependent initialisations
*/
return rc;
}
+#ifdef CONFIG_SCSI_AHCI_PLAT
+void scsi_init(void)
+{
+ u32 reg = readl(HB_SREG_A9_PWRDOM_STAT);
+
+ cphy_disable_overrides();
+ if (reg & PWRDOM_STAT_SATA) {
+ ahci_init((void __iomem *)HB_AHCI_BASE);
+ scsi_scan(true);
+ }
+}
+#endif
+
+#ifdef CONFIG_MISC_INIT_R
int misc_init_r(void)
{
- ahci_init(0xffe08000);
- scsi_scan(1);
+ char envbuffer[16];
+ u32 boot_choice;
+
+ boot_choice = readl(HB_SREG_A9_BOOT_SRC_STAT) & 0xff;
+ sprintf(envbuffer, "bootcmd%d", boot_choice);
+ if (env_get(envbuffer)) {
+ sprintf(envbuffer, "run bootcmd%d", boot_choice);
+ env_set("bootcmd", envbuffer);
+ } else
+ env_set("bootcmd", "");
+
return 0;
}
+#endif
int dram_init(void)
{
return 0;
}
-void dram_init_banksize(void)
+#if defined(CONFIG_OF_BOARD_SETUP)
+int ft_board_setup(void *fdt, bd_t *bd)
+{
+ static const char disabled[] = "disabled";
+ u32 reg = readl(HB_SREG_A9_PWRDOM_STAT);
+
+ if (!(reg & PWRDOM_STAT_SATA))
+ do_fixup_by_compat(fdt, "calxeda,hb-ahci", "status",
+ disabled, sizeof(disabled), 1);
+
+ if (!(reg & PWRDOM_STAT_EMMC))
+ do_fixup_by_compat(fdt, "calxeda,hb-sdhci", "status",
+ disabled, sizeof(disabled), 1);
+
+ return 0;
+}
+#endif
+
+static int is_highbank(void)
{
- gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
- gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
+ uint32_t midr;
+
+ asm volatile ("mrc p15, 0, %0, c0, c0, 0\n" : "=r"(midr));
+
+ return (midr & 0xfff0) == 0xc090;
}
void reset_cpu(ulong addr)
{
+ writel(HB_PWR_HARD_RESET, HB_SREG_A9_PWR_REQ);
+ if (is_highbank())
+ writeb(HB_SCU_A9_PWR_OFF, HB_SCU_A9_PWR_STATUS);
+ else
+ writel(0x1, HB_SREG_A15_PWR_CTRL);
+
+ wfi();
+}
+
+/*
+ * turn off the override before transferring control to Linux, since Linux
+ * may not support spread spectrum.
+ */
+void arch_preboot_os(void)
+{
+ cphy_disable_overrides();
}