path: root/arch/nios2
diff options
authorGraeme Russ <>2011-09-01 00:48:27 +0000
committerWolfgang Denk <>2011-10-05 22:03:09 +0200
commit9558b48af006a34d3ab7f0bd13a76b97acd45e47 (patch)
treed2fbeae7e5f2ef15cc7194fd21d504229259f2de /arch/nios2
parentcc9abfe4ceb360e9adedc4ed44eae0fcc3fd184c (diff)
console: Implement pre-console buffer
Allow redirection of console output prior to console initialisation to a temporary buffer. To enable this functionality, the board (or arch) must define: - CONFIG_PRE_CONSOLE_BUFFER - Enable pre-console buffer - CONFIG_PRE_CON_BUF_ADDR - Base address of pre-console buffer - CONFIG_PRE_CON_BUF_SZ - Size of pre-console buffer (in bytes) The pre-console buffer will buffer the last CONFIG_PRE_CON_BUF_SZ bytes Any earlier characters are silently dropped.
Diffstat (limited to 'arch/nios2')
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/nios2/include/asm/global_data.h b/arch/nios2/include/asm/global_data.h
index 2c4a719409..d9f06645a3 100644
--- a/arch/nios2/include/asm/global_data.h
+++ b/arch/nios2/include/asm/global_data.h
@@ -29,6 +29,9 @@ typedef struct global_data {
unsigned long baudrate;
unsigned long cpu_clk; /* CPU clock in Hz! */
unsigned long have_console; /* serial_init() was called */
+ unsigned long precon_buf_idx; /* Pre-Console buffer index */
phys_size_t ram_size; /* RAM size */
unsigned long env_addr; /* Address of Environment struct */
unsigned long env_valid; /* Checksum of Environment valid */
OpenPOWER on IntegriCloud