Hardware
/
litex
mirror of https://github.com/enjoy-digital/litex.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

csr: fix simple accessor alignment 

MMPTR should always follow CSR alignment, NOT CSR data width.
(the latter merely indicates how many bits within a MMPTR are
actually populated).

Fixup for commit #4a5072a.

Signed-off-by: Gabriel Somlo <gsomlo@gmail.com>
This commit is contained in:
Gabriel Somlo 2020-05-29 11:54:10 -04:00
parent 9e068a7494
commit 3e1b17d459
1 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
litex/soc/software/include/hw/common.h
View File

@ -37,12 +37,12 @@
/* CSR subregisters (a.k.a. "simple CSRs") are embedded inside native CPU-word
* aligned locations: */
#if CONFIG_CSR_DATA_WIDTH == 32
#define MMPTR(a) (*((volatile unsigned int *)(a)))
#elif CONFIG_CSR_DATA_WIDTH == 8
#define MMPTR(a) (*((volatile unsigned char *)(a)))
#if CONFIG_CSR_ALIGNMENT == 32
#define MMPTR(a) (*((volatile uint32_t *)(a)))
#elif CONFIG_CSR_ALIGNMENT == 64
#define MMPTR(a) (*((volatile uint64_t *)(a)))
#else
#error Unsupported CSR data width
#error Unsupported CSR alignment
#endif
static inline void csr_write_simple(unsigned long v, unsigned long a)