forked from Mirrors/opensbi
b353af63e2
Switch all existing platform overrides to use the helper pattern instead of the platform hooks. After this commit, only the .match_table and .init members of struct platform_override are used. There are two minor behavioral differences: - For Allwinner D1, fdt_add_cpu_idle_states() is now called before the body of generic_final_init(). This should have no functional impact. - For StarFive JH7110, if the /chosen/starfive,boot-hart-id property is missing, the code now falls back to using generic_coldboot_harts, instead of accepting any hart. Signed-off-by: Samuel Holland <samuel.holland@sifive.com> Reviewed-by: Anup Patel <anup@brainfault.org> Link: https://lore.kernel.org/r/20250325234342.711447-7-samuel.holland@sifive.com Signed-off-by: Anup Patel <anup@brainfault.org>
64 lines
1.5 KiB
C
64 lines
1.5 KiB
C
// SPDX-License-Identifier: BSD-2-Clause
|
|
/*
|
|
* Copyright (C) 2023 Renesas Electronics Corp.
|
|
*
|
|
*/
|
|
#include <andes/andes.h>
|
|
#include <andes/andes_sbi.h>
|
|
#include <andes/andes_pma.h>
|
|
#include <sbi/riscv_asm.h>
|
|
#include <sbi/sbi_error.h>
|
|
|
|
enum sbi_ext_andes_fid {
|
|
SBI_EXT_ANDES_FID0 = 0, /* Reserved for future use */
|
|
SBI_EXT_ANDES_IOCP_SW_WORKAROUND,
|
|
SBI_EXT_ANDES_PMA_PROBE,
|
|
SBI_EXT_ANDES_PMA_SET,
|
|
SBI_EXT_ANDES_PMA_FREE,
|
|
};
|
|
|
|
static bool andes_cache_controllable(void)
|
|
{
|
|
return (((csr_read(CSR_MICM_CFG) & MICM_CFG_ISZ_MASK) ||
|
|
(csr_read(CSR_MDCM_CFG) & MDCM_CFG_DSZ_MASK)) &&
|
|
(csr_read(CSR_MMSC_CFG) & MMSC_CFG_CCTLCSR_MASK) &&
|
|
(csr_read(CSR_MCACHE_CTL) & MCACHE_CTL_CCTL_SUEN_MASK) &&
|
|
misa_extension('U'));
|
|
}
|
|
|
|
static bool andes_iocp_disabled(void)
|
|
{
|
|
return (csr_read(CSR_MMSC_CFG) & MMSC_IOCP_MASK) ? false : true;
|
|
}
|
|
|
|
static bool andes_apply_iocp_sw_workaround(void)
|
|
{
|
|
return andes_cache_controllable() && andes_iocp_disabled();
|
|
}
|
|
|
|
int andes_sbi_vendor_ext_provider(long funcid,
|
|
struct sbi_trap_regs *regs,
|
|
struct sbi_ecall_return *out)
|
|
{
|
|
int ret = 0;
|
|
|
|
switch (funcid) {
|
|
case SBI_EXT_ANDES_IOCP_SW_WORKAROUND:
|
|
out->value = andes_apply_iocp_sw_workaround();
|
|
break;
|
|
case SBI_EXT_ANDES_PMA_PROBE:
|
|
out->value = andes_sbi_probe_pma();
|
|
break;
|
|
case SBI_EXT_ANDES_PMA_SET:
|
|
ret = andes_sbi_set_pma(regs->a0, regs->a1, regs->a2);
|
|
break;
|
|
case SBI_EXT_ANDES_PMA_FREE:
|
|
ret = andes_sbi_free_pma(regs->a0);
|
|
break;
|
|
default:
|
|
ret = SBI_ENOTSUPP;
|
|
}
|
|
|
|
return ret;
|
|
}
|