ARM: highbank: remove DRAM bank setup

[karo-tx-uboot.git] / board / highbank / highbank.c

diff --git a/board/highbank/highbank.c b/board/highbank/highbank.c
index 8db8a2bb2c1ca9f1ee7366bba5bcf7d9d4151261..55999ed2266bcb4045dc3975dcafbb18955a4ed1 100644 (file)
--- a/board/highbank/highbank.c
+++ b/board/highbank/highbank.c
@@ -1,28 +1,42 @@
 /*
  * 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/>.
+ * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #include <common.h>
 #include <ahci.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
  */
@@ -33,12 +47,48 @@ int board_init(void)
        return 0;
 }
 
+/* We know all the init functions have been run now */
+int board_eth_init(bd_t *bis)
+{
+       int rc = 0;
+
+#ifdef CONFIG_CALXEDA_XGMAC
+       rc += calxedaxgmac_initialize(0, 0xfff50000);
+       rc += calxedaxgmac_initialize(1, 0xfff51000);
+#endif
+       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(1);
+       }
+}
+#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 (getenv(envbuffer)) {
+               sprintf(envbuffer, "run bootcmd%d", boot_choice);
+               setenv("bootcmd", envbuffer);
+       } else
+               setenv("bootcmd", "");
+
        return 0;
 }
+#endif
 
 int dram_init(void)
 {
@@ -46,12 +96,49 @@ 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();
 }