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2020-02-18lib: utils: htif: Fix 32-bit buildBin Meng1-3/+3
When building 32-bit OpenSBI images, we get: lib/utils/sys/htif.c: In function '__check_fromhost': lib/utils/sys/htif.c:12:31: error: left shift count >= width of type [-Werror=shift-count-overflow] #define HTIF_DATA_MASK ((1UL << HTIF_DATA_BITS) - 1) ^~ Fixes: c2f23cc6edd7 ("platform: Add Spike initial support") Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2020-02-17platform: Add Spike initial supportJames Clarke2-0/+150
This patch adds initial platform support Spike emulator. Signed-off-by: James Clarke <jrtc27@jrtc27.com> Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-02-13lib: irqchip/plic: Disable all contexts and IRQsAtish Patra1-4/+4
To initialize PLIC in sane state, we should: 1. set maximum threshold value of M-mode PLIC contexts 2. set maximum threshold value of S-mode PLIC contexts 3. set irq priorities to miniumum Fix the comment and initialize the threshold/priorities correctly. Signed-off-by: Anup Patel <anup.patel@wdc.com> Signed-off-by: Atish Patra <atish.patra@wdc.com>
2020-01-02lib: utils: Support CLINT with 32bit MMIO access on RV64 systemAnup Patel1-38/+50
It is possible to have a CLINT implementation which supports only 32bit MMIO accesses on RV64 system so this patch extends our CLINT driver such that platform code can specify whether CLINT supports 64bit MMIO access. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra<atish.patra@wdc.com> Reviewed-by: Zong Li <zong.li@sifive.com>
2019-08-31lib: Fix timer for 32 bitAtish Patra1-5/+13
To read 64bit time in 32 bit we have to read lower & upper half separately and 'or' them together. However, upper half time may have changed by the time we read lower half. Thus, the resultant 64 bit time may not be accurate. Consider lower half time value only if upper half time value has not changed. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2019-08-16platform: Remove the ipi_sync method from all platforms.Atish Patra1-23/+0
OpenSBI manages outstanding TLB flush requests by queueing them in a fifo synchronously. An ipi sync which uses an atomic operation on MMIO address is no longer required. Remove the ipi sync method from platform header and all usage. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2019-08-12lib: Use correct type for return valueJacob Garber1-1/+1
The error check 'plic_off < 0' does nothing, since plic_off is stored as a u32. Fix this by changing it to an int, which matches the return type of fdt_node_offset_by_compatible(). Signed-off-by: Jacob Garber <jgarber1@ualberta.ca> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2019-07-25utils: Use cpu_to_fdt32() when writing to fdtGeorg Kotheimer1-1/+1
Although it does not make a functional difference, both cpu_to_fdt32() and fdt32_to_cpu() pass on to CPU_TO_FDT32, we should use cpu_to_fdt32() to be semantically correct. Signed-off-by: Georg Kotheimer <georg.kotheimer@kernkonzept.com> Reviewed-by: Atish Patra <atish.patra@wdc.com> Acked-by: Anup Patel <anup.patel@wdc.com>
2019-06-29Changed plic_set_thresh() and plic_set_ie() to publicPanagiotis Peristerakis1-2/+2
Signed-off-by: Panagiotis Peristerakis <perister@ics.forth.gr>
2019-06-19utils: Remove tinyfdt.cAtish Patra3-306/+14
tinyfdt.c was originally added to provide a minimal implementation of fdt parsing. However, we have already included libfdt in OpenSBI for more complicated operations. Remove tinfdt and replace its functiolity using libfdt. Signed-off-by: Atish Patra <atish.patra@wdc.com> Acked-by: Anup Patel <anup.patel@wdc.com>
2019-06-19platform: Enable all drivers by default.Atish Patra4-6/+6
The drivers and libfdt are built as libsbiutils.a instead of libplatsbi.a. libsbiutils.a are not built per platform specific. Thus, enable all drivers by default. Signed-off-by: Atish Patra <atish.patra@wdc.com> Acked-by: Anup Patel <anup.patel@wdc.com>
2019-06-19lib: Rename string.x to sbi_string.xAtish Patra3-9/+21
All string functions are part of libsbi. It makes more sense to rename them to sbi_string.x as the libsbi can be linked with external libraries that can have similar implementation. Signed-off-by: Atish Patra <atish.patra@wdc.com> Acked-by: Anup Patel <anup.patel@wdc.com>
2019-06-19platform: Move platform common to lib/utils.Atish Patra27-0/+6702
Currently, platform/common contains platform/non-platform specific common minimal drivers and libraries. This is helpful is all platforms are built within opensbi framework. Move them to lib/utils so that any external platform code also can reuse the minimalistic drivers or other common libraries. This patch doesn't introduce any functional changes. Signed-off-by: Atish Patra <atish.patra@wdc.com> Acked-by: Anup Patel <anup.patel@wdc.com>
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