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platform: Move platform features to hart

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PMP & performance counters belong to a hart rather than a platform.
In addition to that, these features enable reading/writing from a
particular csr. Thus, they can be detected and set at runtime rather
than compile time.

Move PMP/MCOUNTEREN/SCOUNTEREN features to hart and detect them at runtime.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Tested-by: Jonathan Balkind <jbalkind@cs.princeton.edu>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
This commit is contained in:
Atish Patra
2020-05-09 16:47:28 -07:00
committed by Anup Patel
parent 6a053f6e6c
commit b2df751acf
7 changed files with 77 additions and 36 deletions
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4
lib/utils/fdt/fdt_fixup.c
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@@ -11,6 +11,7 @@
#include <sbi/riscv_asm.h>
#include <sbi/sbi_console.h>
#include <sbi/sbi_math.h>
#include <sbi/sbi_hart.h>
#include <sbi/sbi_platform.h>
#include <sbi/sbi_scratch.h>
#include <sbi/sbi_string.h>
@@ -143,7 +144,6 @@ static int fdt_resv_memory_update_node(void *fdt, unsigned long addr,
int fdt_reserved_memory_fixup(void *fdt)
{
struct sbi_scratch *scratch = sbi_scratch_thishart_ptr();
const struct sbi_platform *plat = sbi_platform_ptr(scratch);
unsigned long prot, addr, size;
int parent, i, j;
int err;
@@ -183,7 +183,7 @@ int fdt_reserved_memory_fixup(void *fdt)
return err;
}
if (!sbi_platform_has_pmp(plat)) {
if (!sbi_hart_has_feature(current_hartid(), SBI_HART_HAS_PMP)) {
/* update the DT with firmware start & size even if PMP is not
* supported. This makes sure that supervisor OS is always
* aware of wheren OpenSBI resident memory area.