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path: root/drivers/cpu/riscv_cpu.c
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2021-02-02common: Drop asm/global_data.h from common headerSimon Glass1-0/+1
Move this out of the common header and include it only where needed. In a number of cases this requires adding "struct udevice;" to avoid adding another large header or in other cases replacing / adding missing header files that had been pulled in, very indirectly. Finally, we have a few cases where we did not need to include <asm/global_data.h> at all, so remove that include. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Rini <trini@konsulko.com>
2020-12-14dm: treewide: Rename ..._platdata variables to just ..._platSimon Glass1-1/+1
Try to maintain some consistency between these variables by using _plat as a suffix for them. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-14dm: treewide: Rename 'platdata' variables to just 'plat'Simon Glass1-1/+1
We use 'priv' for private data but often use 'platdata' for platform data. We can't really use 'pdata' since that is ambiguous (it could mean private or platform data). Rename some of the latter variables to end with 'plat' for consistency. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-07-25cpu: Convert the methods to use a const udevice *Simon Glass1-4/+4
These functions should not modify the device. Convert them to const so that callers don't need to cast if they have a const udevice *. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-07-24Revert "Merge tag 'dm-pull-20jul20' of git://git.denx.de/u-boot-dm"Tom Rini1-4/+4
This reverts commit 5d3a21df6694ebd66d5c34c9d62a26edc7456fc7, reversing changes made to 56d37f1c564107e27d873181d838571b7d7860e7. Unfortunately this is causing CI failures: https://travis-ci.org/github/trini/u-boot/jobs/711313649 Signed-off-by: Tom Rini <trini@konsulko.com>
2020-07-20cpu: Convert the methods to use a const udevice *Simon Glass1-4/+4
These functions should not modify the device. Convert them to const so that callers don't need to cast if they have a const udevice *. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-07-01riscv: cpu: check and append L1 cache to cpu featuresSagar Shrikant Kadam1-0/+12
All cpu cores within FU540-C000 having split I/D caches. Set the L1 cache feature bit using the i-cache-size or d-cache-size as one of the property from device tree indicating that L1 cache is present on the cpu core. => cpu detail 1: cpu@1 rv64imafdc ID = 1, freq = 999.100 MHz: L1 cache, MMU 2: cpu@2 rv64imafdc ID = 2, freq = 999.100 MHz: L1 cache, MMU 3: cpu@3 rv64imafdc ID = 3, freq = 999.100 MHz: L1 cache, MMU 4: cpu@4 rv64imafdc ID = 4, freq = 999.100 MHz: L1 cache, MMU Signed-off-by: Sagar Shrikant Kadam <sagar.kadam@sifive.com> Reviewed-by: Pragnesh Patel <Pragnesh.patel@sifive.com> Reviewed-by: Bin Meng <bin.meng@windriver.com>
2020-07-01riscv: cpu: correctly handle the setting of CPU_FEAT_MMU bitSagar Shrikant Kadam1-4/+1
The conditional check to read "mmu-type" from the device tree is not rightly handled due to which the cpu feature doesn't include CPU_FEAT_MMU even if it's corresponding entry is present in the device tree. The initialization of cpu features is now taken care in cpu-uclass driver, so no need to zero out cpu_freq in riscv_cpu driver and can be removed. Signed-off-by: Sagar Shrikant Kadam <sagar.kadam@sifive.com> Reviewed-by: Pragnesh Patel <pragnesh.patel@sifive.com> Reviewed-by: Bin Meng <bin.meng@windriver.com>
2020-07-01riscv: Enable cpu clock if it is presentSean Anderson1-0/+20
The cpu clock is probably already enabled if we are executing code (though we could be executing from a different core). This patch prevents the cpu clock or its parents from being disabled. Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-07-01riscv: Try to get cpu frequency from a "clocks" node if it existsSean Anderson1-1/+18
Instead of always using the "clock-frequency" property to determine cpu frequency, try using a clock in "clocks" if it exists. This patch also fixes a bug where there could be spurious higher frequencies if sizeof(u32) != sizeof(ulong). Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-05-19common: Drop linux/bitops.h from common headerSimon Glass1-0/+1
Move this uncommon header out of the common header. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-19common: Drop log.h from common headerSimon Glass1-0/+1
Move this header out of the common header. Signed-off-by: Simon Glass <sjg@chromium.org>
2019-09-03riscv: cpu: Skip unavailable hart in the get_count() opBin Meng1-0/+4
We should not count in hart that is marked as not available in the device tree in riscv_cpu_get_count(). Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Rick Chen <rick@andestech.com> Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
2019-02-27cpu: Bind timer driver for boot hartAtish Patra1-3/+4
Currently, timer driver is bound only for hart0. There is no mandatory requirement that hart0 should always come up. In fact, HiFive Unleashed SoC hart0 doesn't boot in S-mode because it only has M-mode. The timer driver should be bound for boot hart. Signed-off-by: Atish Patra <atish.patra@wdc.com> Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Alexander Graf <agraf@suse.de> Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2018-12-18cpu: Add a RISC-V CPU driverBin Meng1-0/+116
This adds a driver for RISC-V CPU. Note the driver will bind a RISC-V timer driver if "timebase-frequency" property is present in the device tree. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de> Reviewed-by: Anup Patel <anup@brainfault.org>