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platform: introduce DT-based configurable heap size

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The default heap size will work for most platforms, but for some
special platforms, the heap is too small to hold all the information
or is too big so that it take too much ram. Introduce configurable
heap should solve this problem and make all generic platforms happy.

Add DT-based heap-size for the generic platform.

Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
Reviewed-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Inochi Amaoto
2024-11-11 10:27:34 +08:00
committed by Anup Patel
parent dcb68dd17d
commit 5d4e3fb2ee
2 changed files with 29 additions and 3 deletions
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28
platform/generic/platform.c
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@@ -69,6 +69,28 @@ static u32 fw_platform_calculate_heap_size(u32 hart_count)
return BIT_ALIGN(heap_size, HEAP_BASE_ALIGN);
}
static u32 fw_platform_get_heap_size(const void *fdt, u32 hart_count)
{
int chosen_offset, config_offset, len;
const fdt32_t *val;
/* Get the heap size from device tree */
chosen_offset = fdt_path_offset(fdt, "/chosen");
if (chosen_offset < 0)
goto default_config;
config_offset = fdt_node_offset_by_compatible(fdt, chosen_offset, "opensbi,config");
if (config_offset < 0)
goto default_config;
val = (fdt32_t *)fdt_getprop(fdt, config_offset, "heap-size", &len);
if (len > 0 && val)
return BIT_ALIGN(fdt32_to_cpu(*val), HEAP_BASE_ALIGN);
default_config:
return fw_platform_calculate_heap_size(hart_count);
}
extern struct sbi_platform platform;
static bool platform_has_mlevel_imsic = false;
static u32 generic_hart_index2id[SBI_HARTMASK_MAX_BITS] = { 0 };
@@ -76,9 +98,9 @@ static u32 generic_hart_index2id[SBI_HARTMASK_MAX_BITS] = { 0 };
static DECLARE_BITMAP(generic_coldboot_harts, SBI_HARTMASK_MAX_BITS);
/*
* The fw_platform_coldboot_harts_init() function is called by fw_platform_init()
* The fw_platform_coldboot_harts_init() function is called by fw_platform_init()
* function to initialize the cold boot harts allowed by the generic platform
* according to the DT property "cold-boot-harts" in "/chosen/opensbi-config"
* according to the DT property "cold-boot-harts" in "/chosen/opensbi-config"
* DT node. If there is no "cold-boot-harts" in DT, all harts will be allowed.
*/
static void fw_platform_coldboot_harts_init(const void *fdt)
@@ -185,7 +207,7 @@ unsigned long fw_platform_init(unsigned long arg0, unsigned long arg1,
}
platform.hart_count = hart_count;
platform.heap_size = fw_platform_calculate_heap_size(hart_count);
platform.heap_size = fw_platform_get_heap_size(fdt, hart_count);
platform_has_mlevel_imsic = fdt_check_imsic_mlevel(fdt);
fw_platform_coldboot_harts_init(fdt);