Atish Patra and Anup Patel
cf83b6e438
platform: Include libfdt & libc.
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Signed-off-by: Atish Patra <atish.patra@wdc.com >
2019-01-18 10:05:12 +05:30
Atish Patra and Anup Patel
57d5eaa5fb
platform: Rename fdt.c to tinyfdt.c
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Libfdt already have fdt.c and fdt.h.
Rename both fdt.* present in openSBI to tinyfdt.*
Signed-off-by: Atish Patra <atish.patra@wdc.com >
2019-01-18 10:05:12 +05:30
Atish Patra and Anup Patel
e2ce15cb3b
platform: Add libfdt support.
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Some of the platform (i.e. SiFive FU540) requires Device
Tree modification before it is passed to higher stages.
Add libfdt support now to help this process. Libfdt should
only be included per platform basis.
Signed-off-by: Atish Patra <atish.patra@wdc.com >
2019-01-18 10:05:12 +05:30
Atish Patra and Anup Patel
1901e8a287
platform: Add minimal libc support.
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libfdt requires minimal libc support. Absoultely
minimum functions are added in libc.
Signed-off-by: Atish Patra <atish.patra@wdc.com >
2019-01-18 10:05:12 +05:30
Atish Patra
8304ee9424
Disable all interrupts during warm irqchip init.
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M mode is not expected to recieve any interrupts.
S mode interrupts shouldn't be enabled in M mode.
Signed-off-by: Atish Patra <atish.patra@wdc.com >
2018-12-21 22:11:21 -08:00
Atish Patra
88b173b33b
Introduce hart disabled parameter in platform.
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As of now, uboot doesn't have support for SMP.
Moreover, unleashed board has a E51 hart which
doesn't not support S mode.
We should only boot only 1 non-zero hart.
Signed-off-by: Atish Patra <atish.patra@wdc.com >
2018-12-21 22:11:21 -08:00
Atish Patra
95fbe7d495
Move hardcoded uart constant to macros.
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Signed-off-by: Atish Patra <atish.patra@wdc.com >
2018-12-21 16:00:28 -08:00
Atish Patra and Anup Patel
f003787455
lib: Hang in sbi_hart_boot_next() if next mode is not supported
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We should not jump to next stage if next mode (S-mode or U-mode)
is not supported by HART.
Signed-off-by: Atish Patra <atish.patra@wdc.com >
Signed-off-by: Anup Patel <anup.patel@wdc.com >
2018-12-21 11:09:47 +05:30
Atish Patra
1d4e36edf8
Support unsigned long in sbi_printf
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Signed-off-by: Atish Patra <atish.patra@wdc.com >
2018-12-20 15:55:32 -08:00
Atish Patra
84971c0bc0
Use wfi for coldboot finish call.
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Signed-off-by: Atish Patra <atish.patra@wdc.com >
2018-12-20 15:55:27 -08:00
Atish Patra
e0a660ec5b
Fix baud rate divisor computation for U540.
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Signed-off-by: Atish Patra <atish.patra@wdc.com >
2018-12-20 15:38:43 -08:00
Atish Patra
3250fe7299
Support /r/n as newline character.
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Signed-off-by: Atish Patra <atish.patra@wdc.com >
2018-12-20 15:38:43 -08:00
Atish Patra
5adf2fdc9e
HiFive Unleashed has 5 harts. Fix the config to reflect that.
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Signed-off-by: Atish Patra <atish.patra@wdc.com >
2018-12-20 15:38:43 -08:00
