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platform: Allow platforms to specify heap size

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We extend struct sbi_platform and struct sbi_scratch to allow platforms
specify the heap size to the OpenSBI firmwares. The OpenSBI firmwares
will use this information to determine the location of heap and provide
heap base address in per-HART scratch space.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
This commit is contained in:
Anup Patel
2023-04-17 11:28:03 +05:30
committed by Anup Patel
parent aad7a37705
commit 5cf9a54016
9 changed files with 58 additions and 14 deletions
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28
include/sbi/sbi_scratch.h
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@@ -20,26 +20,30 @@
#define SBI_SCRATCH_FW_SIZE_OFFSET (1 * __SIZEOF_POINTER__)
/** Offset (in sbi_scratch) of the R/W Offset */
#define SBI_SCRATCH_FW_RW_OFFSET (2 * __SIZEOF_POINTER__)
/** Offset of fw_heap_offset member in sbi_scratch */
#define SBI_SCRATCH_FW_HEAP_OFFSET (3 * __SIZEOF_POINTER__)
/** Offset of fw_heap_size_offset member in sbi_scratch */
#define SBI_SCRATCH_FW_HEAP_SIZE_OFFSET (4 * __SIZEOF_POINTER__)
/** Offset of next_arg1 member in sbi_scratch */
#define SBI_SCRATCH_NEXT_ARG1_OFFSET (3 * __SIZEOF_POINTER__)
#define SBI_SCRATCH_NEXT_ARG1_OFFSET (5 * __SIZEOF_POINTER__)
/** Offset of next_addr member in sbi_scratch */
#define SBI_SCRATCH_NEXT_ADDR_OFFSET (4 * __SIZEOF_POINTER__)
#define SBI_SCRATCH_NEXT_ADDR_OFFSET (6 * __SIZEOF_POINTER__)
/** Offset of next_mode member in sbi_scratch */
#define SBI_SCRATCH_NEXT_MODE_OFFSET (5 * __SIZEOF_POINTER__)
#define SBI_SCRATCH_NEXT_MODE_OFFSET (7 * __SIZEOF_POINTER__)
/** Offset of warmboot_addr member in sbi_scratch */
#define SBI_SCRATCH_WARMBOOT_ADDR_OFFSET (6 * __SIZEOF_POINTER__)
#define SBI_SCRATCH_WARMBOOT_ADDR_OFFSET (8 * __SIZEOF_POINTER__)
/** Offset of platform_addr member in sbi_scratch */
#define SBI_SCRATCH_PLATFORM_ADDR_OFFSET (7 * __SIZEOF_POINTER__)
#define SBI_SCRATCH_PLATFORM_ADDR_OFFSET (9 * __SIZEOF_POINTER__)
/** Offset of hartid_to_scratch member in sbi_scratch */
#define SBI_SCRATCH_HARTID_TO_SCRATCH_OFFSET (8 * __SIZEOF_POINTER__)
#define SBI_SCRATCH_HARTID_TO_SCRATCH_OFFSET (10 * __SIZEOF_POINTER__)
/** Offset of trap_exit member in sbi_scratch */
#define SBI_SCRATCH_TRAP_EXIT_OFFSET (9 * __SIZEOF_POINTER__)
#define SBI_SCRATCH_TRAP_EXIT_OFFSET (11 * __SIZEOF_POINTER__)
/** Offset of tmp0 member in sbi_scratch */
#define SBI_SCRATCH_TMP0_OFFSET (10 * __SIZEOF_POINTER__)
#define SBI_SCRATCH_TMP0_OFFSET (12 * __SIZEOF_POINTER__)
/** Offset of options member in sbi_scratch */
#define SBI_SCRATCH_OPTIONS_OFFSET (11 * __SIZEOF_POINTER__)
#define SBI_SCRATCH_OPTIONS_OFFSET (13 * __SIZEOF_POINTER__)
/** Offset of extra space in sbi_scratch */
#define SBI_SCRATCH_EXTRA_SPACE_OFFSET (12 * __SIZEOF_POINTER__)
#define SBI_SCRATCH_EXTRA_SPACE_OFFSET (14 * __SIZEOF_POINTER__)
/** Maximum size of sbi_scratch (4KB) */
#define SBI_SCRATCH_SIZE (0x1000)
@@ -57,6 +61,10 @@ struct sbi_scratch {
unsigned long fw_size;
/** Offset (in bytes) of the R/W section */
unsigned long fw_rw_offset;
/** Offset (in bytes) of the heap area */
unsigned long fw_heap_offset;
/** Size (in bytes) of the heap area */
unsigned long fw_heap_size;
/** Arg1 (or 'a1' register) of next booting stage for this HART */
unsigned long next_arg1;
/** Address of next booting stage for this HART */