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lib: sbi: Fix how to check whether the domain contains fw_region

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Because firmware is split into rw/rx segments, it cannot be recorded
by a root_fw_region. This problem is solved by adding a flag
fw_region_inited to sbi_domain.

Signed-off-by: Xiang W <wxjstz@126.com>
Reviewed-by: Himanshu Chauhan <hchauhan@ventanamicro.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Xiang W 2023-03-16 20:11:11 +08:00 • committed by Anup Patel
parent ed88a63b90
commit 73ab11dfb0
3 changed files with 12 additions and 21 deletions
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2
include/sbi/sbi_domain.h
View file

@ -122,6 +122,8 @@ struct sbi_domain {
bool system_reset_allowed;
/** Is domain allowed to suspend the system */
bool system_suspend_allowed;
/** Identifies whether to include the firmware region */
bool fw_region_inited;
};
/** The root domain instance */

30
lib/sbi/sbi_domain.c
View file

@ -30,7 +30,6 @@ static struct sbi_hartmask root_hmask = { 0 };
#define ROOT_REGION_MAX 16
static u32 root_memregs_count = 0;
static struct sbi_domain_memregion root_fw_region;
static struct sbi_domain_memregion root_memregs[ROOT_REGION_MAX + 1] = { 0 };
struct sbi_domain root = {
@ -39,6 +38,7 @@ struct sbi_domain root = {
.regions = root_memregs,
.system_reset_allowed = true,
.system_suspend_allowed = true,
.fw_region_inited = false,
};
bool sbi_domain_is_assigned_hart(const struct sbi_domain *dom, u32 hartid)
@ -69,14 +69,6 @@ ulong sbi_domain_get_assigned_hartmask(const struct sbi_domain *dom,
return ret;
}
static void domain_memregion_initfw(struct sbi_domain_memregion *reg)
{
if (!reg)
return;
sbi_memcpy(reg, &root_fw_region, sizeof(*reg));
}
void sbi_domain_memregion_init(unsigned long addr,
unsigned long size,
unsigned long flags,
@ -255,7 +247,6 @@ static int sanitize_domain(const struct sbi_platform *plat,
struct sbi_domain *dom)
{
u32 i, j, count;
bool have_fw_reg;
struct sbi_domain_memregion treg, *reg, *reg1;
/* Check possible HARTs */
@ -288,17 +279,13 @@ static int sanitize_domain(const struct sbi_platform *plat,
}
}
/* Count memory regions and check presence of firmware region */
/* Count memory regions */
count = 0;
have_fw_reg = false;
sbi_domain_for_each_memregion(dom, reg) {
if (reg->order == root_fw_region.order &&
reg->base == root_fw_region.base &&
reg->flags == root_fw_region.flags)
have_fw_reg = true;
sbi_domain_for_each_memregion(dom, reg)
count++;
}
if (!have_fw_reg) {
/* Check presence of firmware regions */
if (!dom->fw_region_inited) {
sbi_printf("%s: %s does not have firmware region\n",
__func__, dom->name);
return SBI_EINVAL;
@ -732,8 +719,7 @@ int sbi_domain_init(struct sbi_scratch *scratch, u32 cold_hartid)
sbi_domain_memregion_init(scratch->fw_start, scratch->fw_rw_offset,
(SBI_DOMAIN_MEMREGION_M_READABLE |
SBI_DOMAIN_MEMREGION_M_EXECUTABLE),
&root_fw_region);
domain_memregion_initfw(&root_memregs[root_memregs_count++]);
&root_memregs[root_memregs_count++]);
sbi_domain_memregion_init((scratch->fw_start + scratch->fw_rw_offset),
(scratch->fw_size - scratch->fw_rw_offset),
@ -741,6 +727,8 @@ int sbi_domain_init(struct sbi_scratch *scratch, u32 cold_hartid)
SBI_DOMAIN_MEMREGION_M_WRITABLE),
&root_memregs[root_memregs_count++]);
root.fw_region_inited = true;
/* Root domain allow everything memory region */
sbi_domain_memregion_init(0, ~0UL,
(SBI_DOMAIN_MEMREGION_READABLE |

1
lib/utils/fdt/fdt_domain.c
View file

@ -358,6 +358,7 @@ static int __fdt_parse_domain(void *fdt, int domain_offset, void *opaque)
return SBI_EINVAL;
memcpy(&regions[val32++], reg, sizeof(*reg));
}
dom->fw_region_inited = root.fw_region_inited;
/* Read "boot-hart" DT property */
val32 = -1U;