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authorTom Rini <trini@konsulko.com>2017-02-23 10:12:41 -0500
committerTom Rini <trini@konsulko.com>2017-02-23 10:12:41 -0500
commitd38de7cb03adf88e18c05d840c2528b7a5af2f9b (patch)
tree35be69932e53e4c58260af58ae841a3d1a2523b6 /arch/arm/mach-uniphier/mmc-boot-mode.c
parentb24cf8540a85a9bf97975aadd6a7542f166c78a3 (diff)
parentbc647958047cd03193e19cd8c08a6771fea828b7 (diff)
Merge branch 'master' of git://git.denx.de/u-boot-uniphier
- Fix regressions caused by the previous reworks - Add pin configuration support - Re-work SPL code - Update DRAM and PLL setup code - Enable needed configs, disable unneeded configs
Diffstat (limited to 'arch/arm/mach-uniphier/mmc-boot-mode.c')
-rw-r--r--arch/arm/mach-uniphier/mmc-boot-mode.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/arm/mach-uniphier/mmc-boot-mode.c b/arch/arm/mach-uniphier/mmc-boot-mode.c
new file mode 100644
index 00000000000..d60c578ce7f
--- /dev/null
+++ b/arch/arm/mach-uniphier/mmc-boot-mode.c
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2016 Socionext Inc.
+ * Author: Masahiro Yamada <yamada.masahiro@socionext.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <mmc.h>
+#include <spl.h>
+
+u32 spl_boot_mode(const u32 boot_device)
+{
+ struct mmc *mmc;
+
+ /*
+ * work around a bug in the Boot ROM of PH1-sLD3, LD4, Pro4, and sLD8:
+ *
+ * The boot ROM in these SoCs breaks the PARTITION_CONFIG [179] of
+ * Extended CSD register; when switching to the Boot Partition 1, the
+ * Boot ROM should issue the SWITCH command (CMD6) with Set Bits for
+ * the Access Bits, but in fact it uses Write Byte for the Access Bits.
+ * As a result, the BOOT_PARTITION_ENABLE field of the PARTITION_CONFIG
+ * is lost. This bug was fixed for PH1-Pro5 and later SoCs.
+ *
+ * Fixup mmc->part_config here because it is used to determine the
+ * partition which the U-Boot image is read from.
+ */
+ mmc = find_mmc_device(0);
+ mmc->part_config &= ~EXT_CSD_BOOT_PART_NUM(PART_ACCESS_MASK);
+ mmc->part_config |= EXT_CSD_BOOT_PARTITION_ENABLE;
+
+ return MMCSD_MODE_EMMCBOOT;
+}