Commit Graph

42 Commits

Author SHA1 Message Date
Atish Patra
d70f8aab45 platform: fu540: Provide a compile time option selective hart booting.
Currently, only hart 1 is enabled for fu540 platform to support U-boot.

Introduce a compile time FU540_ENABLED_HART_MASK option so that specific
harts can be selected for booting. As fu540 is a multicore, we should
boot all cores by default except hart 0.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
2019-01-29 07:17:14 +05:30
Damien Le Moal
8c25dcbf76 platform: add template platform files
Create commented template files to use as a base for new platforms
support implementation.

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
2019-01-24 18:45:01 +05:30
Anup patel
20990ee0ab all: Update copyright header in all files
This patch updates copyright header in all files as follows:
1. Makes "SPDX-License-Identifier: BSD-2-Clause" as first line
2. Change copyright year to 2019 for Western Digital

Signed-off-by: Anup Patel <anup.patel@wdc.com>
2019-01-24 14:07:47 +05:30
Anup Patel
025d0ae994 include: Rename ipi_inject() to ipi_send() for sbi_platform
For better naming, we rename ipi_inject() to ipi_send() in
struct sbi_platform. We also replace term "inject" with
"send" in all related places.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
2019-01-23 08:39:26 +05:30
Anup Patel
36394d2f24 include: Drop MMIO from SBI_PLATFORM_HAS_MMIO_TIMER_VALUE
It is not necessary that platform has MMIO-based timer value
register. It can also have some custom (implementation specific)
CSR for timer value.

This patch renames SBI_PLATFORM_HAS_MMIO_TIMER_VALUE to
SBI_PLATFORM_HAS_TIMER_VALUE to imply "platform timer value"
instead of "mmio timer value".

Signed-off-by: Anup Patel <anup.patel@wdc.com>
2019-01-23 08:39:26 +05:30
Anup Patel
9895d446ae lib: Remove target_hart and hartid parameter from TIMER callbacks
The target_hart and hartid paramter of TIMER callbacks is not
required because it always current hartid which can be obtained
using sbi_current_hartid() API.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
2019-01-23 08:39:26 +05:30
Anup Patel
74fd2e5bb2 lib: Remove hartid parameter from IRQCHIP callbacks
The hartid parameter in IRQCHIP callbacks of sbi_platform
is not required because current hartid can be determined
using sbi_current_hartid() API.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
2019-01-23 08:39:26 +05:30
Anup patel
18ec89e46e lib: Remove source_hart and hartid parameter from IPI callbacks
The source_hart and hartid parameter is really not required in
IPI callbacks of sbi_platform because current hartid can always
be obtained by calling sbi_current_hartid() API.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
2019-01-23 08:39:26 +05:30
Anup Patel
fea9e2b5f3 lib: Remove hartid paramter from early_init() and final_init() callbacks
We simplify early_init() and final_init() callbacks of sbi_platform
by removing "hartid" parameter.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
2019-01-23 08:39:26 +05:30
Damien Le Moal
868ad0b0e5 kendryte/k210: Add device tree support
The Kendryte k210 board initial loader does not provide a device tree
for the firmware and subsequent payload. Add the k210.dts device tree
description file to solve this. This file describes only the SoC core
components: CPUs, memory and PLIC.

Automatically compile and add this file to the firmware generated
using the FW_PAYLOAD_FDT_PATH configuration parameter.

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
2019-01-21 09:58:33 +05:30
Damien Le Moal
58d9f2983a kendryte/k210: Fix console
Clear console input when intializing it.

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
2019-01-21 09:58:33 +05:30
Damien Le Moal
ac3041f4e9 build: Introduce FW_PAYLOAD_ALIGN
The firmware payload offset defined by FW_PAYLOAD_OFFSET must
specify a value large enough so the the payload does not overlap
with the base firmware data, bss and text. For platforms without
any strong requirement on the payload address, introduce the
FW_PAYLOAD_ALIGN build parameter to automatically place the payload
right after the base firmware at an address aligned with the defined
value.

Either FW_PAYLOAD_OFFSET or FW_PAYLOAD_ALIGN should be defined by a
platform configuration. If both FW_PAYLOAD_OFFSET and FW_PAYLOAD_ALIGN
are defined by a platform, FW_PAYLOAD_OFFSET has precedence and is
used for building the final firmawre image.

Using FW_PAYLOAD_ALIGN=4096 with the Kendryte platform rather than
the abitrary FW_PAYLOAD_OFFSET=0x10000 value reduces the final
firmware image size by about 20KB.

Add a description of the FW_PAYLOAD_ALIGN configuration parameter in the
fw_payload documentation file as well. And while at it, also fix
various grammar and style issues in that file..

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
2019-01-21 09:58:33 +05:30
Anup Patel
ebfe231256 platform: Fix compile error caused by standard includes
Avoid using standard includes namely stdint.h, string.h, stdlib.h, etc.

All standard include except stddef.h give compilation error due
to differences in RISC-V toolchain configuration. Typically, the
compilation error is related to "gnu-stubs-lp64.h".

This patch fixes compile error caused by standard includes by
providing substitutes of definetions provided by standard includes
wherever required.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
2019-01-18 10:47:30 +05:30
Atish Patra
e0686ca844 platform: No need to pass context id for plic fixup.
PLIC DT entry fixup can be done by comparing external
interrupt number instead of context id. No need to invoke
fixup for each plic context.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
2019-01-18 10:05:12 +05:30
Atish Patra
3075da07b6 platform: Modify DT using libfdt
Perform following DT updates.
1. Mask hart if mmu is not supported.
2. Add stdout-path under chosen node.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
2019-01-18 10:05:12 +05:30
Atish Patra
00f77d9ba0 platform: Remove string functions from tinyfdt.c
There are couple of string function defined in platform
code. We no longer need them as we can directly link minimal
libc.

Every platform required to inclde this as PLIC driver required
libc functions.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
2019-01-18 10:05:12 +05:30
Atish Patra
cf83b6e438 platform: Include libfdt & libc.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
2019-01-18 10:05:12 +05:30
Atish Patra
57d5eaa5fb platform: Rename fdt.c to tinyfdt.c
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
e2ce15cb3b platform: Add libfdt support.
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
1901e8a287 platform: Add minimal libc support.
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
Damien Le Moal
c37a8508d1 platform: kendryte/k210: Simplify sysctl code
Simplify sysctl.c code to only the used CPU freqency function.
This reduces the size of the final firmware by 4KB.

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
2019-01-03 14:32:25 +09:00
Damien Le Moal
4079df63a7 platform: kendryte/k210: Declare local function static
k210_console_putc() and k210_console_init() are local functions. Declare
them as static.

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
2019-01-03 13:34:32 +09:00
Anup Patel
56e41f7a8d platform: Fix author name for Kendryte K210 platform
The Kendryte K210 platform support was contributed by Damien
hence fix author name.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
2018-12-31 09:27:50 +05:30
Anup Patel
d461d5b790 platform: Rename sifive/hifive_u540 to sifive/fu540
We rename sifive/hifive_u540 platform support to sifive/fu540
to match the SoC name which is SiFive FU540 (as-per user manual).

In fact, we can expect no (or very minimal) board specific
quirks in sifive/fu540 platform support. These board specific
quirks can be turned on/off in-future using PLATFORM_<xyz>
make command-line option.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Signed-off-by: Atish Patra <atish.patra@wdc.com>
2018-12-31 09:27:50 +05:30
Anup Patel
45f874da6c lib: Rename target_hart parameter to hartid for PMP platform callbacks
We rename target_hart parameter of PMP platform callbacks to
hartid for clarity because the parameter represents current
hartid.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
2018-12-27 09:35:09 +05:30
Anup Patel
52ed1d1709 lib: Simplify sbi_platform timer_init() hooks
Instead of having separate timer_init() hooks for cold and
warm boot, this patch updates struct sbi_platform to have just
one timer_init() hook. The type of boot (cold or warm) is now
a boolean flag parameter for the updated timer_init() hook.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
2018-12-27 09:35:09 +05:30
Anup Patel
c1b6200653 lib: Simplify sbi_platform ipi_init() hooks
Instead of having separate ipi_init() hooks for cold and warm boot,
this patch updates struct sbi_platform to have just one ipi_init()
hook. The type of boot (cold or warm) is now a boolean flag parameter
for the updated ipi_init() hook.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
2018-12-27 09:35:09 +05:30
Anup Patel
e34aa8a671 lib: Simplify sbi_platform irqchip_init() hooks
Instead of having separate irqchip_init() hooks for cold and
warm boot, this patch updates struct sbi_platform to have just
one irqchip_init() hook. The type of boot (cold or warm) is now
a boolean flag parameter for the updated irqchip_init() hook.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
2018-12-27 09:35:09 +05:30
Anup Patel
7b59571758 lib: Simplify sbi_platform early_init() and final_init() hooks
Instead of having separate early_init() and final_init() hooks
for cold and warm boot, this patch updates struct sbi_platform
to have just one early_init() and one final_init() hook. The
type of boot (cold or warm) is now a boolean flag parameter for
the updated early_init() and final_init() hooks.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
2018-12-27 09:35:09 +05:30
Anup Patel
472d3f4e17 platform: Remove PLAT_HART_COUNT and PLAT_HART_STACK_SIZE
The PLAT_HART_COUNT and PLAT_HART_STACK_SIZE are only used
by platform code so no need of exposing these to everyone
by adding it to platform-cppflags-y.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
2018-12-22 21:01:40 +05:30
Anup Patel
24b4d48674 platform: Remove PLAT_NAME from all platforms
The PLAT_NAME is used only in platform.c for all platforms hence
remove it.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
2018-12-22 20:49:52 +05:30
Atish Patra
8304ee9424 Disable all interrupts during warm irqchip init.
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.
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
Anup Patel
a6a5bb22a8 Fix plic warm init in platform code.
Pass S-Mode and M-mode context id separately to common warm init.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Anup Patel <anup.patel@wdc.com>
2018-12-21 22:11:21 -08:00
Anup Patel
5148499e03 Fix plic warm init in common code.
Unleashed doesn't have S mode for hart 0.
PLIC register base calculation is current wrong because of that.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Anup Patel <anup.patel@wdc.com>
2018-12-21 22:11:10 -08:00
Atish Patra
95fbe7d495 Move hardcoded uart constant to macros.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
2018-12-21 16:00:28 -08:00
Damien Le Moal
27332e63fa Introduce HAS_MFAULTS_DELEGATION feature
Conditionnally delegate page fault exceptions from M mode to S mode
based on the platform features.

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
2018-12-21 16:32:30 +05:30
Anup Patel
db6c1fe78b platform: kendryte/k210: Don't include math.h
The math.h is not required anymore and it also gives
compile error for certain toolchains hence thsi patch
removes math.h include from kendryte/k210/sysctl.c.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
2018-12-21 15:32:28 +05:30
Damien Le Moal
07ee5f2e32 Kendryte-k210: Remove unnecessary asm functions
Use functions defined in sbi/riscv_asm.h.

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
2018-12-21 17:20:56 +09:00
Damien Le Moal
745ae45e65 Update Kendryte k210 support
Booting now.

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
2018-12-21 15:12:22 +09:00
Damien Le Moal
aa68f0252f Refine platform features control
Allow a platform to report its supported features in more details.
The new features defined are:
* SBI_PLATFORM_HAS_PMP
* SBI_PLATFORM_HAS_SCOUNTEREN
* SBI_PLATFORM_HAS_MCOUNTEREN

In addition, define the macro SBI_PLATFORM_DEFAULT_FEATURES as the set
of features that are generally expected to be supported by a Linux
capable platform.

Operations touching the features controlled with these falgs are not
executed if the platform does not set the corresponding feature flags.

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
2018-12-21 15:09:13 +09:00
Anup Patel
089f70a179 top: Rename "plat" to "platform" everywhere
This patch renames "plat" to "platform" everywhere for better
readablility.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
2018-12-21 10:35:04 +05:30