X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=board%2Fhighbank%2Fhighbank.c;h=55999ed2266bcb4045dc3975dcafbb18955a4ed1;hb=d25ba89e8b2b80c7229658b9fabdf96e9af64e01;hp=09cd45d3744154722d39dd4f5c1cb8dbe3fe2570;hpb=9cd9b34dc7f247fd0fce08ab688bf8197f1bfdbc;p=u-boot

diff --git a/board/highbank/highbank.c b/board/highbank/highbank.c
index 09cd45d374..55999ed226 100644
--- a/board/highbank/highbank.c
+++ b/board/highbank/highbank.c
@@ -1,18 +1,7 @@
 /*
  * 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>
@@ -20,18 +9,34 @@
 #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
  */
@@ -54,14 +59,25 @@ int board_eth_init(bd_t *bis)
 	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)
 {
 	char envbuffer[16];
 	u32 boot_choice;
 
-	ahci_init(0xffe08000);
-	scsi_scan(1);
-
 	boot_choice = readl(HB_SREG_A9_BOOT_SRC_STAT) & 0xff;
 	sprintf(envbuffer, "bootcmd%d", boot_choice);
 	if (getenv(envbuffer)) {
@@ -72,6 +88,7 @@ int misc_init_r(void)
 
 	return 0;
 }
+#endif
 
 int dram_init(void)
 {
@@ -79,15 +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)
 {
-	gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
-	gd->bd->bi_dram[0].size =  PHYS_SDRAM_1_SIZE;
+	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)
+{
+	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();
+}