riscv: add run mode configuration for SPL
U-Boot SPL can be run in a different privilege mode from U-Boot proper.
Add new configuration entries for SPL to allow the run mode to be
configured independently of U-Boot proper.
Extend all uses of the CONFIG_RISCV_SMODE and CONFIG_RISCV_MMODE
configuration symbols to also cover the SPL equivalents. Ensure that
files compatible with only one privilege mode are not included in builds
targeting an incompatible privilege mode.
Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
diff --git a/arch/riscv/cpu/ax25/Kconfig b/arch/riscv/cpu/ax25/Kconfig
index 6b4b92e..f4b59cb 100644
--- a/arch/riscv/cpu/ax25/Kconfig
+++ b/arch/riscv/cpu/ax25/Kconfig
@@ -4,8 +4,8 @@
imply CPU
imply CPU_RISCV
imply RISCV_TIMER
- imply ANDES_PLIC if RISCV_MMODE
- imply ANDES_PLMT if RISCV_MMODE
+ imply ANDES_PLIC if (RISCV_MMODE || SPL_RISCV_MMODE)
+ imply ANDES_PLMT if (RISCV_MMODE || SPL_RISCV_MMODE)
help
Run U-Boot on AndeStar V5 platforms and use some specific features
which are provided by Andes Technology AndeStar V5 families.
@@ -14,7 +14,7 @@
config RISCV_NDS_CACHE
bool "AndeStar V5 families specific cache support"
- depends on RISCV_MMODE
+ depends on RISCV_MMODE || SPL_RISCV_MMODE
help
Provide Andes Technology AndeStar V5 families specific cache support.
diff --git a/arch/riscv/cpu/cpu.c b/arch/riscv/cpu/cpu.c
index 5ca1857..e457f6a 100644
--- a/arch/riscv/cpu/cpu.c
+++ b/arch/riscv/cpu/cpu.c
@@ -46,13 +46,13 @@
return false;
#else /* !CONFIG_CPU */
-#ifdef CONFIG_RISCV_MMODE
+#if CONFIG_IS_ENABLED(RISCV_MMODE)
return csr_read(CSR_MISA) & (1 << (ext - 'a'));
-#else /* !CONFIG_RISCV_MMODE */
+#else /* !CONFIG_IS_ENABLED(RISCV_MMODE) */
#warning "There is no way to determine the available extensions in S-mode."
#warning "Please convert your board to use the RISC-V CPU driver."
return false;
-#endif /* CONFIG_RISCV_MMODE */
+#endif /* CONFIG_IS_ENABLED(RISCV_MMODE) */
#endif /* CONFIG_CPU */
}
diff --git a/arch/riscv/cpu/generic/Kconfig b/arch/riscv/cpu/generic/Kconfig
index 1d6ab50..b7552f5 100644
--- a/arch/riscv/cpu/generic/Kconfig
+++ b/arch/riscv/cpu/generic/Kconfig
@@ -8,5 +8,5 @@
imply CPU
imply CPU_RISCV
imply RISCV_TIMER
- imply SIFIVE_CLINT if RISCV_MMODE
+ imply SIFIVE_CLINT if (RISCV_MMODE || SPL_RISCV_MMODE)
imply CMD_CPU
diff --git a/arch/riscv/cpu/start.S b/arch/riscv/cpu/start.S
index e06db40..e82ee9e 100644
--- a/arch/riscv/cpu/start.S
+++ b/arch/riscv/cpu/start.S
@@ -39,7 +39,7 @@
.section .text
.globl _start
_start:
-#ifdef CONFIG_RISCV_MMODE
+#if CONFIG_IS_ENABLED(RISCV_MMODE)
csrr a0, CSR_MHARTID
#endif
@@ -62,7 +62,7 @@
#ifdef CONFIG_SMP
/* set xSIE bit to receive IPIs */
-#ifdef CONFIG_RISCV_MMODE
+#if CONFIG_IS_ENABLED(RISCV_MMODE)
li t0, MIE_MSIE
#else
li t0, SIE_SSIE
@@ -344,7 +344,7 @@
#ifdef CONFIG_SMP
csrr t0, MODE_PREFIX(ip)
-#ifdef CONFIG_RISCV_MMODE
+#if CONFIG_IS_ENABLED(RISCV_MMODE)
andi t0, t0, MIE_MSIE
#else
andi t0, t0, SIE_SSIE