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

platform: Add support for Shakti C-class SoC from IIT-M

Browse Source 
C-Class is a member of the SHAKTI family of processors from Indian
Institute of Technology - Madras(IIT-M).
It is an extremely configurable and commercial-grade 5-stage in-order
core supporting the standard RV64GCSUN ISA extensions.

https://gitlab.com/shaktiproject/cores/c-class/blob/master/README.md

We add OpenSBI support for Shakti C-class SoC.

Signed-off-by: Vijai Kumar K <vijai@behindbytes.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
This commit is contained in:
Vijai Kumar K
2020-06-17 19:25:16 +05:30
committed by Anup Patel
parent 637b348224
commit db56ef367c
10 changed files with 181 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

37
lib/utils/fdt/fdt_helper.c
View File

@@ -26,6 +26,9 @@
#define DEFAULT_SIFIVE_UART_REG_SHIFT 0
#define DEFAULT_SIFIVE_UART_REG_IO_WIDTH 4
#define DEFAULT_SHAKTI_UART_FREQ 50000000
#define DEFAULT_SHAKTI_UART_BAUD 115200
const struct fdt_match *fdt_match_node(void *fdt, int nodeoff,
const struct fdt_match *match_table)
{
@@ -164,6 +167,40 @@ int fdt_parse_max_hart_id(void *fdt, u32 *max_hartid)
return 0;
}
int fdt_parse_shakti_uart_node(void *fdt, int nodeoffset,
struct platform_uart_data *uart)
{
int len, rc;
const fdt32_t *val;
unsigned long reg_addr, reg_size;
if (nodeoffset < 0 || !uart || !fdt)
return SBI_ENODEV;
rc = fdt_get_node_addr_size(fdt, nodeoffset, &reg_addr, &reg_size);
if (rc < 0 || !reg_addr || !reg_size)
return SBI_ENODEV;
uart->addr = reg_addr;
/**
* UART address is mandaotry. clock-frequency and current-speed
* may not be present. Don't return error.
*/
val = (fdt32_t *)fdt_getprop(fdt, nodeoffset, "clock-frequency", &len);
if (len > 0 && val)
uart->freq = fdt32_to_cpu(*val);
else
uart->freq = DEFAULT_SHAKTI_UART_FREQ;
val = (fdt32_t *)fdt_getprop(fdt, nodeoffset, "current-speed", &len);
if (len > 0 && val)
uart->baud = fdt32_to_cpu(*val);
else
uart->baud = DEFAULT_SHAKTI_UART_BAUD;
return 0;
}
int fdt_parse_sifive_uart_node(void *fdt, int nodeoffset,
struct platform_uart_data *uart)
{