diff options
author | Ovidiu Panait <ovpanait@gmail.com> | 2022-05-31 21:14:35 +0300 |
---|---|---|
committer | Michal Simek <michal.simek@amd.com> | 2022-06-24 14:16:00 +0200 |
commit | 816226d27efa22d89821dfd0796f763a24c33944 (patch) | |
tree | d68cb4e53ca64c646950f6f26a6648927ea7cec4 /arch/microblaze | |
parent | 9df16c5937f68654fb2b67f932319c375f8e4e45 (diff) |
cpu: add CPU driver for microblaze
Add a basic CPU driver that retrieves information about the microblaze CPU
core. cpu_ops handlers are implemented so that the "cpu" command can work
properly:
U-Boot-mONStR> cpu list
0: cpu@0 MicroBlaze @ 50MHz, Rev: 11.0, FPGA family: zynq7000
U-Boot-mONStR> cpu detail
0: cpu@0 MicroBlaze @ 50MHz, Rev: 11.0, FPGA family: zynq7000
ID = 0, freq = 50 MHz: L1 cache, MMU
Note: cpu_ver_lookup[] and family_string_lookup[] arrays were imported from
linux.
Signed-off-by: Ovidiu Panait <ovpanait@gmail.com>
Link: https://lore.kernel.org/r/20220531181435.3473549-14-ovpanait@gmail.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
Diffstat (limited to 'arch/microblaze')
-rw-r--r-- | arch/microblaze/cpu/cpuinfo.c | 111 | ||||
-rw-r--r-- | arch/microblaze/include/asm/cpuinfo.h | 79 |
2 files changed, 190 insertions, 0 deletions
diff --git a/arch/microblaze/cpu/cpuinfo.c b/arch/microblaze/cpu/cpuinfo.c index 3f0b1d2c04a..f021f4e5e25 100644 --- a/arch/microblaze/cpu/cpuinfo.c +++ b/arch/microblaze/cpu/cpuinfo.c @@ -8,6 +8,117 @@ DECLARE_GLOBAL_DATA_PTR; +#if CONFIG_IS_ENABLED(CPU_MICROBLAZE) +/* These key value are as per MBV field in PVR0 */ +static const struct microblaze_version_map cpu_ver_lookup[] = { + {"5.00.a", 0x01}, + {"5.00.b", 0x02}, + {"5.00.c", 0x03}, + {"6.00.a", 0x04}, + {"6.00.b", 0x06}, + {"7.00.a", 0x05}, + {"7.00.b", 0x07}, + {"7.10.a", 0x08}, + {"7.10.b", 0x09}, + {"7.10.c", 0x0a}, + {"7.10.d", 0x0b}, + {"7.20.a", 0x0c}, + {"7.20.b", 0x0d}, + {"7.20.c", 0x0e}, + {"7.20.d", 0x0f}, + {"7.30.a", 0x10}, + {"7.30.b", 0x11}, + {"8.00.a", 0x12}, + {"8.00.b", 0x13}, + {"8.10.a", 0x14}, + {"8.20.a", 0x15}, + {"8.20.b", 0x16}, + {"8.30.a", 0x17}, + {"8.40.a", 0x18}, + {"8.40.b", 0x19}, + {"8.50.a", 0x1a}, + {"8.50.b", 0x1c}, + {"8.50.c", 0x1e}, + {"9.0", 0x1b}, + {"9.1", 0x1d}, + {"9.2", 0x1f}, + {"9.3", 0x20}, + {"9.4", 0x21}, + {"9.5", 0x22}, + {"9.6", 0x23}, + {"10.0", 0x24}, + {"11.0", 0x25}, + {NULL, 0}, +}; + +static const struct microblaze_version_map family_string_lookup[] = { + {"virtex2", 0x4}, + {"virtex2pro", 0x5}, + {"spartan3", 0x6}, + {"virtex4", 0x7}, + {"virtex5", 0x8}, + {"spartan3e", 0x9}, + {"spartan3a", 0xa}, + {"spartan3an", 0xb}, + {"spartan3adsp", 0xc}, + {"spartan6", 0xd}, + {"virtex6", 0xe}, + {"virtex7", 0xf}, + /* FIXME There is no key code defined for spartan2 */ + {"spartan2", 0xf0}, + {"kintex7", 0x10}, + {"artix7", 0x11}, + {"zynq7000", 0x12}, + {"UltraScale Virtex", 0x13}, + {"UltraScale Kintex", 0x14}, + {"UltraScale+ Zynq", 0x15}, + {"UltraScale+ Virtex", 0x16}, + {"UltraScale+ Kintex", 0x17}, + {"Spartan7", 0x18}, + {NULL, 0}, +}; + +static const char *lookup_string(u32 code, + const struct microblaze_version_map *entry) +{ + for (; entry->string; ++entry) + if (entry->code == code) + return entry->string; + + return "(unknown)"; +} + +static const u32 lookup_code(const char *string, + const struct microblaze_version_map *entry) +{ + for (; entry->string; ++entry) + if (!strcmp(entry->string, string)) + return entry->code; + + return 0; +} + +const char *microblaze_lookup_fpga_family_string(const u32 code) +{ + return lookup_string(code, family_string_lookup); +} + +const char *microblaze_lookup_cpu_version_string(const u32 code) +{ + return lookup_string(code, cpu_ver_lookup); +} + +const u32 microblaze_lookup_fpga_family_code(const char *string) +{ + return lookup_code(string, family_string_lookup); +} + +const u32 microblaze_lookup_cpu_version_code(const char *string) +{ + return lookup_code(string, cpu_ver_lookup); +} +#endif /* CONFIG_CPU_MICROBLAZE */ + void microblaze_early_cpuinfo_init(void) { struct microblaze_cpuinfo *ci = gd_cpuinfo(); diff --git a/arch/microblaze/include/asm/cpuinfo.h b/arch/microblaze/include/asm/cpuinfo.h index c27dd40af7c..86d2c8a034d 100644 --- a/arch/microblaze/include/asm/cpuinfo.h +++ b/arch/microblaze/include/asm/cpuinfo.h @@ -13,6 +13,11 @@ * @icache_line_length: Instruction cache line length in bytes. * @dcache_size: Size of data cache memory in bytes. * @dcache_line_length: Data cache line length in bytes. + * @use_mmu: MMU support flag. + * @cpu_freq: Cpu clock frequency in Hz. + * @addr_size: Address bus width in bits. + * @ver_code: Cpu version code. + * @fpga_code: FPGA family version code. */ struct microblaze_cpuinfo { u32 icache_size; @@ -20,9 +25,83 @@ struct microblaze_cpuinfo { u32 dcache_size; u32 dcache_line_length; + +#if CONFIG_IS_ENABLED(CPU_MICROBLAZE) + u32 use_mmu; + u32 cpu_freq; + u32 addr_size; + + u32 ver_code; + u32 fpga_code; +#endif /* CONFIG_CPU_MICROBLAZE */ +}; + +/** + * struct microblaze_version_data - Maps a hex version code to a cpu/fpga name. + */ +struct microblaze_version_map { + const char *string; + const u32 code; }; /** + * microblaze_lookup_cpu_version_code() - Get hex version code for the + * specified cpu name string. + * + * This function searches the cpu_ver_lookup[] array for the hex version code + * associated with a specific CPU name. The version code is returned if a match + * is found, otherwise 0. + * + * @string: cpu name string + * + * Return: >0 if the entry is found, 0 otherwise. + */ +const u32 microblaze_lookup_cpu_version_code(const char *string); + +/** + * microblaze_lookup_fpga_family_code() - Get hex version code for the + * specified fpga family name. + * + * This function searches the family_string_lookup[] array for the hex version + * code associated with a specific fpga family name. The version code is + * returned if a match is found, otherwise 0. + * + * @string: fpga family name string + * + * Return: >0 if the entry is found, 0 otherwise. + */ +const u32 microblaze_lookup_fpga_family_code(const char *string); + +/** + * microblaze_lookup_cpu_version_string() - Get cpu name for the specified cpu + * version code. + * + * This function searches the cpu_ver_lookup[] array for the cpu name string + * associated with a specific version code. The cpu name is returned if a match + * is found, otherwise "(unknown)". + * + * @code: cpu version code + * + * Return: Pointer to the cpu name if the entry is found, otherwise "(unknown)". + */ +const char *microblaze_lookup_cpu_version_string(const u32 code); + +/** + * microblaze_lookup_fpga_family_string() - Get fpga family name for the + * specified version code. + * + * This function searches the family_string_lookup[] array for the fpga family + * name string associated with a specific version code. The fpga family name is + * returned if a match is found, otherwise "(unknown)". + * + * @code: fpga family version code + * + * Return: Pointer to the fpga family name if the entry is found, otherwise + * "(unknown)". + */ +const char *microblaze_lookup_fpga_family_string(const u32 code); + +/** * microblaze_early_cpuinfo_init() - Initialize cpuinfo with default values. * * Initializes the global data cpuinfo structure with default values (cache |