Firmware/opensbi
8
0
Fork 0
forked from Mirrors/opensbi
Code Pull Requests Activity

lib: utils/irqchip: Add FDT based driver for IMSIC

Browse Source 
We add simple FDT irqchip driver for IMSIC so that generic platform
(and other FDT based platforms) can utilize common IMIC library.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
This commit is contained in:
Anup Patel
2021-04-21 15:27:29 +05:30
committed by Anup Patel
parent 9f73669959
commit 811da5c541
6 changed files with 230 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
platform/generic/platform.c
View File

@@ -18,6 +18,7 @@
#include <sbi_utils/fdt/fdt_helper.h>
#include <sbi_utils/fdt/fdt_pmu.h>
#include <sbi_utils/irqchip/fdt_irqchip.h>
#include <sbi_utils/irqchip/imsic.h>
#include <sbi_utils/serial/fdt_serial.h>
#include <sbi_utils/timer/fdt_timer.h>
#include <sbi_utils/ipi/fdt_ipi.h>
@@ -56,6 +57,7 @@ static void fw_platform_lookup_special(void *fdt, int root_offset)
}
extern struct sbi_platform platform;
static bool platform_has_mlevel_imsic = false;
static u32 generic_hart_index2id[SBI_HARTMASK_MAX_BITS] = { 0 };
/*
@@ -110,6 +112,8 @@ unsigned long fw_platform_init(unsigned long arg0, unsigned long arg1,
platform.hart_count = hart_count;
platform_has_mlevel_imsic = fdt_check_imsic_mlevel(fdt);
/* Return original FDT pointer */
return arg1;
@@ -118,6 +122,13 @@ fail:
wfi();
}
static int generic_nascent_init(void)
{
if (platform_has_mlevel_imsic)
imsic_local_irqchip_init();
return 0;
}
static int generic_early_init(bool cold_boot)
{
if (!generic_plat || !generic_plat->early_init)
@@ -210,6 +221,7 @@ static uint64_t generic_pmu_xlate_to_mhpmevent(uint32_t event_idx,
}
const struct sbi_platform_operations platform_ops = {
.nascent_init = generic_nascent_init,
.early_init = generic_early_init,
.final_init = generic_final_init,
.early_exit = generic_early_exit,