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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2019-05-09 09:21:47 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2019-05-10 08:18:25 +0200 |
| commit | 67db840f685a90dc51959c236215e4abdb62a3ff (patch) | |
| tree | e92865c5963047e0d1a617f409fe66b082a58727 /arch/arm | |
| parent | 3a7564a97d95f6c39fd3aaac3354d1bfd4e65336 (diff) | |
| download | barebox-67db840f685a90dc51959c236215e4abdb62a3ff.tar.gz barebox-67db840f685a90dc51959c236215e4abdb62a3ff.tar.xz | |
ARM: Layerscape: ls1046a: Add bootsource detection support
Not much to do, there are only a few boot sources supported.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-layerscape/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/mach-layerscape/boot.c | 39 | ||||
| -rw-r--r-- | arch/arm/mach-layerscape/include/mach/layerscape.h | 2 |
3 files changed, 42 insertions, 0 deletions
diff --git a/arch/arm/mach-layerscape/Makefile b/arch/arm/mach-layerscape/Makefile index 269839254b..ad4e2f7af3 100644 --- a/arch/arm/mach-layerscape/Makefile +++ b/arch/arm/mach-layerscape/Makefile @@ -2,3 +2,4 @@ obj- := __dummy__.o lwl-y += lowlevel.o errata.o lwl-$(CONFIG_ARCH_LS1046) += lowlevel-ls1046a.o obj-y += icid.o +obj-pbl-y += boot.o diff --git a/arch/arm/mach-layerscape/boot.c b/arch/arm/mach-layerscape/boot.c new file mode 100644 index 0000000000..c804977d22 --- /dev/null +++ b/arch/arm/mach-layerscape/boot.c @@ -0,0 +1,39 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <common.h> +#include <init.h> +#include <bootsource.h> +#include <mach/layerscape.h> +#include <soc/fsl/immap_lsch2.h> + +enum bootsource ls1046_bootsource_get(void) +{ + void __iomem *dcfg = IOMEM(LSCH2_DCFG_ADDR); + uint32_t rcw_src; + + rcw_src = in_be32(dcfg) >> 23; + + if (rcw_src == 0x40) + return BOOTSOURCE_MMC; + if ((rcw_src & 0x1fe) == 0x44) + return BOOTSOURCE_SPI_NOR; + if ((rcw_src & 0x1f0) == 0x10) + /* 8bit NOR Flash */ + return BOOTSOURCE_NOR; + if ((rcw_src & 0x1f0) == 0x20) + /* 16bit NOR Flash */ + return BOOTSOURCE_NOR; + + return BOOTSOURCE_UNKNOWN; +} + +static int ls1046a_bootsource_init(void) +{ + if (!of_machine_is_compatible("fsl,ls1046a")) + return 0; + + bootsource_set(ls1046_bootsource_get()); + + return 0; +} +coredevice_initcall(ls1046a_bootsource_init);
\ No newline at end of file diff --git a/arch/arm/mach-layerscape/include/mach/layerscape.h b/arch/arm/mach-layerscape/include/mach/layerscape.h index 55e0b7bc96..3366e7f258 100644 --- a/arch/arm/mach-layerscape/include/mach/layerscape.h +++ b/arch/arm/mach-layerscape/include/mach/layerscape.h @@ -4,4 +4,6 @@ #define LS1046A_DDR_SDRAM_BASE 0x80000000 #define LS1046A_DDR_FREQ 2100000000 +enum bootsource ls1046_bootsource_get(void); + #endif /* __MACH_LAYERSCAPE_H */ |